Difference between revisions of "Karl Hollaus"
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− | __NOTOC__ | + | __NOTOC__ {{DISPLAYTITLE: Dr. techn. Karl Hollaus }} |
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+ | | <html> <img src="http://www.asc.tuwien.ac.at/~khollaus/DSC_3458biom.jpg" width="120"> </html> | ||
+ | | | ||
+ | | rowspan=2 valign="center" | | ||
− | + | ==== Address ==== | |
− | |||
− | |||
− | + | Institute for Analysis and Scientific Computing <br> | |
− | + | Wiedner Hauptstrasse 8-10 <br> | |
+ | A-1040 Vienna, Austria | ||
+ | |||
+ | phone: +43 1 58801 10116 | ||
+ | email: [mailto:karl.hollaus@tuwien.ac.atNOSPAMPLEASE karl.hollaus@tuwien.ac.at] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | ==== Workshop ==== | ||
+ | * [https://www.asc.tuwien.ac.at/mshom2020 Advances in Multi-Scale Methods and Homogenization for Laminates and Windings in Magnetic Fields MSHOM 2020] | ||
+ | * [http://www.asc.tuwien.ac.at/mshom2016 Advances in Multi-Scale Methods and Homogenization for Laminates and Windings in Magnetic Fields MSHOM 2016] | ||
+ | |||
+ | ==== Projects ==== | ||
+ | * [http://www.asc.tuwien.ac.at/~schoeberl/wiki/index.php/Projecthp-MSFEMs high-performance-Multiscale Finite Element Methods hp-MSFEMs] | ||
+ | * [http://www.asc.tuwien.ac.at/~schoeberl/wiki/index.php/ProjectMSFEM4ECP Multi-Scale Finite Element Methods for Eddy Current Problems MSFEM4ECP] | ||
==== Research Interests ==== | ==== Research Interests ==== | ||
− | + | Computational Electromagnetics, Finite Element Method, Multiscale Method and Homogenization, Domain Decomposition, Software Development | |
− | ([ | + | ([https://ngsolve.org/ Netgen/NGSolve]) |
==== Diploma Thesis ==== | ==== Diploma Thesis ==== | ||
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==== PhD Thesis ==== | ==== PhD Thesis ==== | ||
''Numerical Simulation of Eddy Currents and the Associated Losses in Laminated Ferromagnetic Materials by the Method of Finite Elements'', TU Graz, 2001. [http://www.asc.tuwien.ac.at/~khollaus/Thesis/PhDTheses.pdf pdf] | ''Numerical Simulation of Eddy Currents and the Associated Losses in Laminated Ferromagnetic Materials by the Method of Finite Elements'', TU Graz, 2001. [http://www.asc.tuwien.ac.at/~khollaus/Thesis/PhDTheses.pdf pdf] | ||
+ | |||
+ | ==== Teaching ==== | ||
+ | ''"Partielle Differentialgleichungen und Methode der finiten Elemente"'' | ||
+ | <!--#Lecture Notes (2016): [http://www.asc.tuwien.ac.at/~khollaus/Teaching/PDE_FEM_16.pdf pdf] --> | ||
+ | <!--#Simulation Examples:'' [http://www.asc.tuwien.ac.at/~khollaus/Teaching/NumericalExamples.zip zip] --> | ||
+ | <!--#NetgenNGSolve (Windows 64bit):'' [http://www.asc.tuwien.ac.at/~khollaus/Teaching/Netgen-5.2_x64.exe exe] --> | ||
==== Talks ==== | ==== Talks ==== | ||
− | ''Novel Variation Formulation for Domain Decomposition to solve Maxwell's Equations'', Barcelona, June 3, 2010. [http://www.asc.tuwien.ac.at/~khollaus/Talks/ | + | * Air Gap and Edge Effect in the 2D/1D Method with the Magnetic Vector Potential '''A''' Using MSFEM'', CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018. [http://www.asc.tuwien.ac.at/~khollaus/Talks/CEFC_2018_EdgeEffect2D1D_Hollaus.pdf pdf] |
+ | |||
+ | * ''The Multiscale Finite Element Method in three dimensions to simulate the Eddy Current Problem in Laminated Iron Cores'', 18th International IGTE Symposium 2018, Graz, Austria, Sept. 16 - 19, 2018. [http://www.asc.tuwien.ac.at/~khollaus/Talks/MSFEM_IGTE_2018_Hollaus.pdf pdf] (invited talk) | ||
+ | |||
+ | * ''Homogenization of Laminated Cores and the Role of Surface Charges'', ICEAA2017, Verona, Italy, Sept. 11 - 15, 2017. | ||
+ | |||
+ | * ''Multiscale Finite Element Method and Geometric Perturbation of Laminated Cores'', ICEAA2017, Verona, Italy, Sept. 11 - 15, 2017. | ||
+ | |||
+ | * ''Multiscale and Harmonic Balance FEM for the Eddy Current Problem in Laminated Iron Cores'', CEFC 2016, Miami, USA, Nov. 13 - 16, 2016. [http://www.asc.tuwien.ac.at/~khollaus/Talks/CEFC2016_Presentation_Hollaus_1.pdf pdf] | ||
+ | |||
+ | * ''Various Two Dimensional Multiscale Finite Element Formulations for the Eddy Current Problem in Iron Laminates'', EMF 2016, Lyon, France, April 12 - 14, 2016. [http://www.asc.tuwien.ac.at/~khollaus/Talks/EMF_Lyon_2016_Hollaus_1.pdf pdf] (highlighted talk) | ||
+ | |||
+ | * ''Multi-Scale Finite Element Method to Simulate Eddy Currents in Laminated Iron'', SCEE 2014, Wuppertal, Germany, July 22 - 25, 2014. [http://www.asc.tuwien.ac.at/~khollaus/Talks/SCEE_Wuppertal_2014_Hollaus.pdf pdf] | ||
+ | |||
+ | * ''Two-Scale Homogenization of the Nonlinear Eddy Current Problem with FEM'', Compumag 2013, Budapest, June 30 - July 4, 2013. [http://www.asc.tuwien.ac.at/~khollaus/Talks/Compumag_Budapest_2013_Hollaus_revised.pdf pdf] | ||
+ | |||
+ | * ''FEM: Domain Decomposition and Homogenization for Maxwell's Equations of Large Scale Problems'', TCSE Vienna Workshop 2012, Vienna, February 13, 2012. [http://www.asc.tuwien.ac.at/~khollaus/Talks/MathMod2012_Hollaus.pdf pdf] | ||
+ | |||
+ | * ''Homogenization of the Eddy Current Problem in 2D'', 14th International IGTE Symposium 2010, Graz, Austria, Sept. 19 - 22, 2010. [http://www.asc.tuwien.ac.at/~khollaus/Talks/HomogenizationIGTE2010.pdf pdf] | ||
+ | |||
+ | * ''Novel Variation Formulation for Domain Decomposition to solve Maxwell's Equations'', DSPDES 2010, Barcelona, Spain, June 3, 2010. [http://www.asc.tuwien.ac.at/~khollaus/Talks/DSPDES_Barcelona_2010_Hollaus.pdf pdf] | ||
+ | |||
+ | ==== Recent Work ==== | ||
+ | * ''Multiscale Finite Element Method, Harmonic Balance Method and Model Order Reduction for Nonlinear Eddy Currents in Laminations'', Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2020_Digest_MORHBM_KHollaus.pdf preprint] | ||
+ | * ''An Approach for Step-Lap Joints Using the Multiscale Finite Element Method Based on the Magnetic Vector Potential'', Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2020_Digest_StepLap_KHollaus.pdf preprint] | ||
+ | * ''Enhanced Technique for Metascreens using the Generalized Finite Element Method'', Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2020_Digest_Leumueller.pdf preprint] | ||
+ | * ''An Equilibrated Error Estimator for the Multiscale FEM of a Linear Eddy Current Problem'', Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2020_Digest_schoebinger_equilibrated.pdf preprint] | ||
+ | * ''Effective BH-Curves for Laminated Magnetic Cores'', Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Sept., 2020). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2020_Digest_effective_bhcurves.pdf preprint] | ||
+ | * ''A Hierarchical Error Estimator for the MSFEM for the Eddy Current Problem in 3D'', Abstract for ISTET 2019, Sofia, Bulgaria, July 21 - 23, 2019. | ||
+ | * ''An Approach to Consider Step-Lap-Joints in the Multiscale Finite Element Method'', Abstract for ISTET 2019, Sofia, Bulgaria, July 21 - 23, 2019. | ||
+ | * ''A Multiscale FEM for the Eddy Current Problem with '''T''', Phi - Phi in Laminated Conducting Media'', Digest for Compumag 2019, Paris, France, July 15-19, 2019 (submitted, Jan. 2019). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Hollaus_MSFEM_T_Phi_Digest_Comp2019.pdf preprint] | ||
+ | |||
+ | * ''A 2D/1D Multiscale Finite Element Method Using the Biot-Savart Field for Synchronous Machines'', Digest for Compumag 2019, Paris, France, July 15-19, 2019. [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Schoebinger_2D1D_MSFEM_Digest_Compumag2019.pdf preprint] | ||
+ | |||
+ | * ''Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC'', Digest for Compumag 2019, Paris, France, July 15-19, 2019.[http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Leumueller_EMC_Digest_Compumag2019.pdf preprint] | ||
+ | |||
+ | * ''MSFEM and MOR to Minimize the Computational Costs of Nonlinear Eddy Current Problems in Laminated Iron Cores'', Digest for Compumag 2019, Paris, France, July 15-19, 2019.[http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Hollaus_MOR_Digest_Compumag2019.pdf preprint] | ||
+ | |||
+ | * ''Nonasymptotic Homogenization of Laminated Magnetic Cores'', Digest for Compumag 2019, Paris, France, July 15-19, 2019. [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Tsukerman_Homogenization_Digest_Compumag2019.pdf preprint] | ||
+ | |||
+ | * ''Air Gap and Edge Effect in the 2D/1D-Method with the Magnetic Vector Potential '''A''' using MSFEM'', Digest for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2018_Digest_Hollaus_EdgeEffect_2D1D.pdf preprint] | ||
+ | |||
+ | * ''Simple and Cheap Structural MOR Method for the 2D/1D-MSFEM'', Abstract for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2018_Digest_Hollaus_MOR_2D1D.pdf preprint] | ||
+ | |||
+ | * ''A 2D/1D Multiscale FEM Model for the Nonlinear Eddy Current Problem in Thin Sheets'', Abstract for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/CEFC2018_Digest_schoebinger.pdf preprint] | ||
+ | |||
+ | * ''MSFEM and MOR to simulate one laminate for electrical machines'', Abstract for EMF 2018, Darmstadt, Germany, April 10 - 12, 2018 (submitted, Dec., 2017). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/EMF2018_Abstract_MSFEM_MOR_Hollaus.pdf preprint] | ||
+ | |||
+ | * ''MOR for the MSFEM of the Eddy Current Problem in Linear Laminated Media'', Abstract for MATHMOD 2018, Vienna, Austria, Feb. 21 - 23, 2018 (submitted, Nov., 2017). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Hollaus_MathMod2018_SMOR.pdf preprint] | ||
+ | |||
+ | * ''MSFEM for the Linear 2D1D-Problem of Eddy Currents in Thin Iron Sheets'', Abstract for MATHMOD 2018, Vienna, Austria, Feb. 21 - 23, 2018 (submitted, Nov., 2017). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Schoebinger_MathMod2018_MSFEM_2D1D.pdf preprint] | ||
+ | |||
+ | * ''MSFEM with Network Coupling for the Eddy Current Problem of a Toroidal Transformer'', Abstract for ISTET 2017, Ilmenau, Germany, July 16 - 19, 2017 (submitted, April, 2017). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/ISTET2017_T.pdf preprint] | ||
+ | |||
+ | * ''A Mixed Multiscale Finite Element Method with A and J for Eddy Currents in Iron Laminates'', Digest for Compumag 2017, Daejeon, Korea, June 18 - 22, 2017 (submitted, Jan., 2017). [http://www.asc.tuwien.ac.at/~khollaus/Recent_Work/Compumag2017_Hollaus_MixedFormulation_0.pdf preprint] | ||
==== Publications ==== | ==== Publications ==== | ||
− | #K. Hollaus, | + | #K. Hollaus, M. Schöbinger, "A Mixed Multiscale FEM for the Eddy-Current Problem With '''T''', Phi - Phi in Laminated Conducting Media", IEEE Transactions on Magnetics, vol. 56, no. 4, 4 pages, 2020. [https://ieeexplore.ieee.org/document/8957356 online] |
− | #K. Hollaus, | + | #K. Hollaus, J. Schöberl, M. Schöbinger, "MSFEM and MOR to Minimize the Computational Costs of Nonlinear Eddy-Current Problems in Laminated Iron Cores", IEEE Transactions on Magnetics, vol. 56, no. 2, 4 pages, 2020. [https://ieeexplore.ieee.org/document/8955920 online] |
− | #K. Hollaus, | + | #M. Leumüller, B. Auinger, H. Hackl, J. Schöberl and K. Hollaus, "Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC", COMPUMAG, 4 pages, Oct. 2019. [https://ieeexplore.ieee.org/document/9032816 online] |
− | # | + | #M. Schöbinger, K. Hollaus, I. Tsukerman, "Nonasymptotic Homogenization of Laminated Magnetic Cores", IEEE Transactions on Magnetics, vol. 56, no. 2, 4 pages, 2020. [https://ieeexplore.ieee.org/document/8954674 online] |
− | # | + | #K. Hollaus, M. Schöbinger, "Air Gap and Edge Effect in the 2D/1D-Method with the Magnetic Vector Potential '''A''' using MSFEM", IEEE Transactions on Magnetics, vol. 56, no. 1, 5 pages, 2020. [https://ieeexplore.ieee.org/document/8937060 online] |
− | # | + | #K. Hollaus, "A MSFEM to simulate the eddy current problem in laminated iron cores in 3D" COMPEL, vol. 38 no. 5, pp. 1667-1682, 2019. [https://www.emerald.com/insight/content/doi/10.1108/COMPEL-12-2018-0538/full/html online] |
− | # | + | #M. Schöbinger, S. Steentjes, K. Hameyer, J. Schöberl, K. Hollaus, "''MSFEM for the Eddy Current Problem in a Laminated Core Including Hysteresis", IEEE Transactions on Magnetics, vol. 55, no. 8, 9 pages, 2019. [https://ieeexplore.ieee.org/document/8701455 online] |
− | # | + | #M. Schöbinger, J. Schöberl, K. Hollaus, "Multiscale FEM for the Linear 2D/1D-Problem of Eddy Currents in Thin Iron Sheets", IEEE Transactions on Magnetics, vol. 55, no. 1, 12 pages, 2019. [https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8544022/ online] |
− | #K. Hollaus, | + | #K. Hollaus, J. Schöberl, "Some Two-Dimensional Multiscale Finite Element Formulations for the Eddy Current Problem in Iron Laminates", IEEE Transactions on Magnetics, vol. 54, no. 4, 7401716, 16 pages, 2018. [https://ieeexplore.ieee.org/document/8260951/ online] |
− | #K. Hollaus, | + | #K. Hollaus, M. Schöbinger, "Multiscale finite element method for perturbation of laminated structures", In ICEAA 2017, pp. 1262-1263. [https://ieeexplore.ieee.org/document/8065501/ online] |
− | #K. Hollaus, | + | #M. Schöbinger, K. Hollaus, I. Tsukerman, "Homogenization of laminated magnetic cores and the role of surface charges", In ICEAA 2017, pp. 971-972. [https://ieeexplore.ieee.org/document/8065419/ online] |
− | # | + | #Markus Schöbinger, J. Schöberl, K. Hollaus, "An Error Estimator for Multiscale FEM for the Eddy-Current Problem in Laminated Materials", IEEE Transactions on Magnetics, vol. 54, no. 3, 7203204, 4 pages, 2018. [http://ieeexplore.ieee.org/document/8288600/ online] |
− | #K. Hollaus, | + | #Markus Schöbinger, J. Schöberl, K. Hollaus, "An Efficient Reformulation of a Multiscale Method for the Eddy Current Problem," COMPEL, vol. 36, pp. 1421-1429, 2017. |
− | # | + | #K. Hollaus, "Multiscale and Harmonic Balance FEM for the Eddy Current Problem in Laminated Iron Cores". In Proc. 17th IEEE CEFC 2016, 13-16 Nov. 2016, Miami, USA. |
− | #K. Hollaus, | + | #H. Davtjan, M. Kaltenbacher, J. Schöberl, M. Schöbinger, K. Hollaus, "Multiscale finite element methods for eddy current problems in laminated iron MSFEM4ECP", ''Technical article'', Newsletter, International Compumag Society, Volume 23 No. 2., pp. 3 - 13, July, 2016. |
− | # | + | #K. Hollaus, J. Schöberl, "Multi-scale FEM and magnetic vector potential '''A''' for 3D eddy currents in laminated media," COMPEL, vol. 34, no. 5, pp. 1598-1608, 2015. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/COMPEL-02-2015-0090 online] |
− | + | #K. Hollaus, J. Schöberl, "A Higher Order Multi-Scale FEM with '''A''' for 2D Eddy Current Problems in Laminated Iron", IEEE Transactions on Magnetics, vol. 51, no. 3, 7402804, 4 pages, March, 2015. [https://ieeexplore.ieee.org/document/7093479 online] | |
− | #K. Hollaus, O. Bíró, | + | #K. Hollaus, A. Hannukainen, J. Schöberl, "Two-Scale Homogenization of the Nonlinear Eddy Current Problem with FEM," IEEE Transactions on Magnetics, vol. 50, no. 2, pp. 413-416, Feb., 2014. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6749045 online] |
− | + | #K. Hollaus, M. Huber, J. Schöberl, P. Hamberger, "A Linear FEM Benchmark for the Homogenization of the Eddy Currents in Laminated Media in 3D," International Federation of Automatic Control IFAC, vol. 7, no. 1, pp. 1190-1194, 2012. [http://www.asc.tuwien.ac.at/~khollaus/Publications/hollaus_mathmod_paper.pdf preprint] | |
− | # | + | #K. Hollaus, J. Schöberl, "Homogenization of the Eddy Current Problem in 2D," Proceedings of the 14th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, pp. 154-159, Graz, Austria, September 19-22, 2010. [http://www.asc.tuwien.ac.at/~khollaus/Publications/Paper_Hollaus_Homogenization_IGTE2010.pdf preprint] |
− | #K. Hollaus, | + | #K. Hollaus, D. Feldengut, J. Schöberl, M. Wabro, D. Omeragic, "Nitsche-type Mortaring for Maxwell's Equations," Progress In Electromagnetics Research Symposium Proceedings, 397 - 402, July 5-8, Cambridge, USA 2010. [http://www.asc.tuwien.ac.at/~khollaus/Publications/maxnitsche.pdf preprint] |
− | #K. Hollaus, | + | #K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, C. Stockreiter, "Extraction of Circuit Parameters from PCB by FDTD and SIBC," COMPEL, vol. 28, no. 4, pp. 1091-1101, 2009. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640910959134 online] |
− | + | #Björk et al., "System-Level Design," in G.Q. Zhang, A.J. van Roosmalen "More than Moore - Creating High Value Micro/Nanoelectronics Systems," Springer, pp. 305-330, 2009. [http://link.springer.com/book/10.1007%2F978-0-387-75593-9 online] | |
− | # | + | #K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, and G. Plieschenegger, "Simulation of Crosstalk on Printed Circuit Boards by FDTD, FEM, and a Circuit Model," IEEE Transactions on Magnetics, vol. 44, pp. 1486-1489, April 2008. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4526893 online] |
− | + | #K. Hollaus, O. Bíró, K. Preis and C. Stockreiter, "Edge finite elements coupled with a circuit for wave problems," Internat. Conf. on Electromagnetics in Advanced Applications, ICEAA 2007, IEEE Xplore, pp. 956-959, Torino, Italy, 17th –21st Sept. 2007. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4387464 online] | |
− | + | #B. Weiß, O. Bíró, P. Caldera, K. Hollaus, G. Paoli, K. Preis, "A Multigrid Algorithm for the Transfinite-Element Time-Domain Method using the '''A''', V -Formulation", IEEE Transactions on Magnetics, vol. 43, pp. 1353-1356, April 2007. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4137828 online] | |
− | #K. Hollaus, | + | #C. Stockreiter, G. Matzenauer, O. Biro, P. Caldera, G. Paoli, K. Hollaus, K. Preis, B. Weiss, "Transfinite Element Method Using the '''A''', v-Potential Formulation With Edge Elements in the Frequency Domain," IEEE Transactions on Magnetics, vol. 43, pp. 1349-1352, April 2007. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4137818 online] |
− | # | + | #W. Renhart, K. Hollaus, C. Magele and G. Matzenauer, "Radiation of USB-WLAN Antenna Influenced by Human Tissue and by Notebook Enclosure," IEEE Transactions on Magnetics, vol. 43, pp. 1345-1348, April 2007. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4137797 online] |
− | #K. Hollaus, | + | #B. Weiß, O. Bíró, P. Caldera, K. Hollaus, G. Paoli, K. Preis, C. Stockreiter, "On the convergence of the transfinite-element method," COMPEL, vol. 26, no. 3, pp. 600-611, 2007. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640710751082 online] |
− | # | + | #G. Matzenauer, O. Bíró, K. Hollaus, K. Preis, W. Renhart, "Perfectly Matched Layers for '''T''', Phi Formulation," COMPEL, vol. 26, no. 3, pp. 612-625, 2007. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640710751091 online] |
− | + | #H. Scharfetter, K. Hollaus, J. Rosell-Ferrer, R. Merwa, "Single-step 3-D image reconstruction in magnetic induction tomography: Theoretical limits of spatial resolution and contrast to noise ratio," Annals of Biomedical Engineering, pp. 1-13, 2006. [http://download.springer.com/static/pdf/890/art%253A10.1007%252Fs10439-006-9177-6.pdf?auth66=1391078492_190a9d25a092bbd8b556eeae734fb77d&ext=.pdf online] | |
− | # | + | #K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, W. Renhart, C. Stockreiter and B. Weiß, "Simulation of Microstrips on Printed Circuit Boards," Tagungsband des 51. Internationalen Wissenschaftliches Kolloquium der TU Ilmenau, ISBN 3-938843-16-0, 5 pages, Ilmenau, Germany, 11-15, September 2006. [http://www.asc.tuwien.ac.at/~khollaus/Publications/Simulation_of_Microstrips_on_Printed_Circuit_Boards_Hollaus_Ilmenau_2006.pdf preprint] |
− | + | #K. Hollaus, O. Bíró, K. Preis, C. Stockreiter and B. Weiß, "S-Parameter Extraction from Structures on Printed Circuit Boards by FDTD and Surface Impedance Boundary Condition," Proceedings of The Twelfth IEEE Conference on Electromagnetic Field Computation, ISBN 1-4244-0319-7, p. 378, Miami, USA, April 30th-May 3rd, 2006. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1633171 online] | |
− | + | #K. Hollaus, O. Bíró, G. Matzenauer, K. Preis, C. Stockreiter, B. Weiß, P. Caldera and G. Paoli, "Comparison of FETD and FDTD to Simulate Micro-strip Structures on PCBs," Proceedings of The Sixth International Conference on Computation in Electromagnetics CEM 2006, ISBN 3-8007-2957-1, p. 209-210, Aachen, Germany, April 4-6, 2006. [http://www.asc.tuwien.ac.at/~khollaus/Publications/Comparison_of_FETD_and_FDTD_to_Simulate_Micro-strip_Structures_on_PCBs_2006.pdf preprint] | |
− | #O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Electromagnetic Nondestructive Evaluation (V), eds. J. Pávó et al, IOS Press, Amsterdam, vol. 21, pp. 11-15, 2001. | + | #B. Weiß, O. Bíró, K. Hollaus, K. Preis, P. Caldera, G. Paoli, "A Multigrid Solver for Time Harmonic Three-Dimensional Electromagnetic Wave Problems," IEEE Transactions on Magnetics, vol. 42, pp. 639-642, April 2006. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1608287 online] |
− | #J. Pávó, O. Bíró, K. Hollaus, "Calculation of the field map from the measurement data of the fluxset sensor", COMPEL, vol. 20, no. 2, pp. 404-416, 2001. | + | #K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, C. Stockreiter, and B. Weiss, "Electromagnetic Field Computation of Simple Structures on Printed Circuit Boards by the Finite-Element Method," IEEE Transactions on Magnetics, vol. 42, pp. 815-818, April 2006. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1608331 online] |
− | #K. Hollaus, O. Bíró, "A FEM of the Eddy Current Losses in Thin Ferromagnetic Sheets", Proceedings of the 9th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, pp. 152-157, Graz, Austria, September 11-13, 2000. | + | #B. Wagner, K. Hollaus, Ch. Magele, "Reconstruction of the anisotropic complex conductivity distribution of a human thigh in three dimensions," IEEE Transactions on Magnetics, vol. 42, pp. 1171-1174, April 2006. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1608420 online] |
− | #K. Hollaus, O. Bíró, "A FEM Formulation to Treat 3D Eddy Currents in Laminations," IEEE Transactions on Magnetics, vol. 36, pp. 1289-1292, July 2000. | + | #P. Brunner, R. Merwa, A. Missner, J. Rosell, K. Hollaus, H. Scharfetter, "Reconstruction of the shape of conductivity spectra using differential multi-frequency magnetic induction tomography", Physiol. Meas., vol. 27, no. 5, pp. 237-248, May 2006. [http://iopscience.iop.org/0967-3334/27/5/S20/pdf/pm6_5_s20.pdf online] |
− | #D. Rodger, P. C. Coles, O. Bíró, K. Hollaus, J. Pávó, "An | + | #R. Merwa, P. Brunner, A. Missner, K. Hollaus, H. Scharfetter, "Solution of the inverse problem of magnetic induction tomography (MIT) with multiple objects: analysis of detectability and statistical properties with respect to the reconstructed conducting region", Physiol. Meas., vol. 27, no. 5, pp. 249-259, May 2006. [http://iopscience.iop.org/0967-3334/27/5/S21/pdf/pm6_5_s21.pdf online] |
+ | #K. Hollaus, B. Wagner, O. Bíró, "Simulation of the quasi-static electric field by an electric current vector potential approximated by edge elements", COMPEL, vol. 24, no. 2, pp. 581-590, 2005. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640510586196 online] | ||
+ | #B. Wagner, K. Hollaus, Ch. Magele, "Reconstruction of the anisotropic complex conductivity distribution in 3D", COMPEL, vol. 24, no. 2, pp. 558-564, 2005. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640510586178 online] | ||
+ | #K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, B. Weiss, "Simulation of Simple Topologies on a PCB by a Frequency and a Time Domain Method," Proceedings of Joint 9th ICEAA `05 and 11th EESC `05, Torino, Italy, 12th Sept. – 16th Sept. 2005, ISBN 88-8202-094-0, pp. 893-896.[http://www.asc.tuwien.ac.at/~khollaus/Publications/Simulation_of_Simple_Topologies_on_a_PCB_ICEAA_2005.pdf preprint] | ||
+ | #K. Hollaus, O. Bíró, "Comparison of Tetrahedral Edge Finite-Elements Using Different Potential Formulations,” IEEE Transactions on Magnetics, vol. 41, pp. 1676-1679, May 2005. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1430938 online] | ||
+ | #K. Hollaus, O. Bíró, C. Gerstenberger, K. Preis, R. Stollberger, B. Wagner, "Effect of Stray Capacitances on Bio-Impedances in Quasi-Static Electric Field,” IEEE Transactions on Magnetics, vol. 41, pp. 1940-1943, May 2005. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1431004 online] | ||
+ | #R. Merwa, K. Hollaus, P. Brunner, H. Scharfetter, "Solution of the inverse problem of magnetic induction tomography (MIT)", Physiol. Meas., vol. 26, no. 2, pp. 241-250, April 2005. [http://iopscience.iop.org/0967-3334/26/2/023/pdf/0967-3334_26_2_023.pdf online] | ||
+ | #K. Hollaus, C. Gerstenberger, C. Magele, H. Hutten, "Accurate Reconstruction Algorithm of the Complex Conductivity Distribution in Three Dimensions," IEEE Transactions on Magnetics, vol. 40, pp. 1144-1147, March 2004. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1284620 online] | ||
+ | #K. Hollaus, C. Magele, R. Merwa, H. Scharfetter, "Numerical Simulation of the Eddy Current Problem in Magnetic Induction Tomography for Biomedical Applications by Edge Elements,” IEEE Transactions on Magnetics, vol. 40, pp. 623-626, March 2004. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1284491 online] | ||
+ | #K. Hollaus, C. Magele, R. Merwa, H. Scharfetter, "Fast calculation of the sensitivity matrix in magnetic induction tomography by tetrahedral edge finite elements and the reciprocity theorem", Physiol. Meas., vol. 25, no. 1, pp. 159-168, February 2004. [http://iopscience.iop.org/0967-3334/25/1/023/pdf/pm4_1_023.pdf online] | ||
+ | #K. Hollaus, B. Weiß, Ch. Magele, H. Hutten, "Geometric multigrid to accelerate the solution of the quasi-static electric field problem by tetrahedral finite elements", Physiol. Meas., vol. 25, no. 1, pp. 169-179, February 2004. [http://iopscience.iop.org/0967-3334/25/1/024/pdf/pm4_1_024.pdf online] | ||
+ | #R. Casañas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell, "Measurement of liver iron overload by magnetic induction using a planar gradiometer: preliminary human results", Physiol. Meas., vol. 25, no. 1, pp. 315-323, February 2004. [http://iopscience.iop.org/0967-3334/25/1/035/pdf/pm4_1_035.pdf online] | ||
+ | #H. Scharfetter, S. Rauchenzauner, R. Merwa, O. Bíró, K. Hollaus, "Planar gradiometer for magnetic induction tomography (MIT): theoretical and experimental sensitivity maps for a low-contrast phantom", Physiol. Meas., vol. 25, no. 1, pp. 325-333, February 2004. [http://iopscience.iop.org/0967-3334/25/1/036/pdf/pm4_1_036.pdf online] | ||
+ | #R. Merwa, K. Hollaus, O. Bíró, H. Scharfetter, "Detection of brain oedema using magnetic induction tomography: A feasibility study of the likely sensitivity and detectability", Physiol. Meas., vol. 25, no. 1, pp. 347-354, February 2004. [http://iopscience.iop.org/0967-3334/25/1/038/pdf/pm4_1_038.pdf online] | ||
+ | #R. Casañas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell, "In-vitro and in-vivo measurement of iron concentration in human hepatic tissue by magnetic induction methods," Proc. 25th Annual Int. Conf. IEEE, Eng. in Med. and Biol. Society, vol. 4, pp. 3064-3067, Sept. 2003. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1280788 online] | ||
+ | #K. Hollaus, R. Stollberger, B. Wagner, C. Gerstenberger, Ch. Magele, H. Hutten, "Simulations of the bio-impedance of the human thigh by the finite element method in 3D", Tagungsband des 48. Internationalen Wissenschaftliches Kolloquium der TU Ilmenau, ISSN 1619-4098, pp. 425-426, Ilmenau, Germany, 22-25, September 2003. [http://www.asc.tuwien.ac.at/~khollaus/Publications/Simulations_of_the_bio-impedance_of_the_human_thigh_Ilmenau_2003.pdf preprint] | ||
+ | #R. Merwa, K. Hollaus, B. Brandstätter, H. Scharfetter, "Numerical solution of the general 3D eddy current problem for magnetic induction tomography (spectroscopy)", Physiol. Meas., vol. 24, no. 2, pp. 545-554, May 2003. [http://iopscience.iop.org/0967-3334/24/2/364/pdf/pm3264.pdf online] | ||
+ | #B. Brandstätter, K. Hollaus, Ch. Magele, M. Michael, R. Merwa, H. Scharfetter, H. Hutten, "Direct estimation of Cole parameters in multifrequency EIT using a regularized Gauss-Newton method", Physiol. Meas., vol. 24, no. 2, pp. 437-448, May 2003. [http://iopscience.iop.org/0967-3334/24/2/355/pdf/pm3255.pdf online] | ||
+ | #K. Hollaus, O. Bíró, B. Brandstätter, S. P. Cermak, H. Zangl, G. Brasseur, "Design and Optimization of a Multi-Induction-Loop Access Control System", Proceedings of the International Symposium on Electromagnetic Compatibility, EMC Europe 2002, vol. 2, pp. 883-888, Sorrent, Italy, September 9-13, 2002. [http://www.asc.tuwien.ac.at/~khollaus/Publications/Design_and_Optimization_of_a_Multi-Induction-Loop_Access_Control_System_EMC_Sorrento_2002.pdf preprint] | ||
+ | #K. Hollaus, O. Bíró, "Derivation of a Complex Permeability from the Preisach Model," IEEE Transactions on Magnetics, vol. 38, pp. 905-908, March 2002. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=996233 online] | ||
+ | #D. Rodger, P. C. Coles, O. Bíró, K. Hollaus, J. Pávó, "An Aluminium Plate Benchmark for ECT", in Electromagnetic Nondestructive Evaluation (V), eds. J. Pávó et al, IOS Press, Amsterdam, vol. 21, pp. 46-48, 2001. [http://www.iospress.nl/book/electromagnetic-nondestructive-evaluation-vi/ online] | ||
+ | #O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Electromagnetic Nondestructive Evaluation (V), eds. J. Pávó et al, IOS Press, Amsterdam, vol. 21, pp. 11-15, 2001. [http://www.iospress.nl/book/electromagnetic-nondestructive-evaluation-vi/ online] | ||
+ | #J. Pávó, O. Bíró, K. Hollaus, "Calculation of the field map from the measurement data of the fluxset sensor", COMPEL, vol. 20, no. 2, pp. 404-416, 2001. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321640110383294 online] | ||
+ | #K. Hollaus, O. Bíró, "A FEM of the Eddy Current Losses in Thin Ferromagnetic Sheets", Proceedings of the 9th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, pp. 152-157, Graz, Austria, September 11-13, 2000. [http://www.asc.tuwien.ac.at/~khollaus/Publications/A_FEM_Simulation_of_the_Eddy_Current_Losses_in_Thin_Ferromagnetic_Sheets_IGTE_Symp_2000.pdf preprint] | ||
+ | #K. Hollaus, O. Bíró, "A FEM Formulation to Treat 3D Eddy Currents in Laminations," IEEE Transactions on Magnetics, vol. 36, pp. 1289-1292, July 2000. [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=877676 online] | ||
+ | #D. Rodger, P. C. Coles, O. Bíró, K. Hollaus, J. Pávó, "An Aluminium Plate Benchmark for ECT", in Short Papers of The Sixth International Workshop on Electromagnetic Nondestructive Evaluation, ISBN 9-634206-42-5, Budapest, Hungary, pp. 39-40, 28th-30th July, 2000. | ||
#O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Short Papers of The Sixth International Workshop on Electromagnetic Nondestructive Evaluation, ISBN 9-634206-42-5, Budapest, Hungary, pp. 7-8, 28th-30th July, 2000. | #O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Short Papers of The Sixth International Workshop on Electromagnetic Nondestructive Evaluation, ISBN 9-634206-42-5, Budapest, Hungary, pp. 7-8, 28th-30th July, 2000. | ||
− | #K. Hollaus, O. Bíró, "Estimation of | + | #K. Hollaus, O. Bíró, "Estimation of 3-D eddy currents in conducting laminations by an anisotropic conductivity and a 1-D analytical solution", COMPEL, vol. 18, no. 3, pp. 494-503, 1999. [http://www.emeraldinsight.com/doi/pdfplus/10.1108/03321649910275170 online] |
Revision as of 21:12, 20 June 2020
AddressInstitute for Analysis and Scientific Computing phone: +43 1 58801 10116 email: karl.hollaus@tuwien.ac.at |
Workshop
- Advances in Multi-Scale Methods and Homogenization for Laminates and Windings in Magnetic Fields MSHOM 2020
- Advances in Multi-Scale Methods and Homogenization for Laminates and Windings in Magnetic Fields MSHOM 2016
Projects
- high-performance-Multiscale Finite Element Methods hp-MSFEMs
- Multi-Scale Finite Element Methods for Eddy Current Problems MSFEM4ECP
Research Interests
Computational Electromagnetics, Finite Element Method, Multiscale Method and Homogenization, Domain Decomposition, Software Development (Netgen/NGSolve)
Diploma Thesis
Identifikation optimaler Geometrieparameter einer SMES - Spulenanordnung mit deterministischen und stochastischen Optimierungsverfahren, TU Graz and Dipartimento di Ingegneria Elettrica, Università degli Studi di Genova, 1997.
PhD Thesis
Numerical Simulation of Eddy Currents and the Associated Losses in Laminated Ferromagnetic Materials by the Method of Finite Elements, TU Graz, 2001. pdf
Teaching
"Partielle Differentialgleichungen und Methode der finiten Elemente"
Talks
- Air Gap and Edge Effect in the 2D/1D Method with the Magnetic Vector Potential A Using MSFEM, CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018. pdf
- The Multiscale Finite Element Method in three dimensions to simulate the Eddy Current Problem in Laminated Iron Cores, 18th International IGTE Symposium 2018, Graz, Austria, Sept. 16 - 19, 2018. pdf (invited talk)
- Homogenization of Laminated Cores and the Role of Surface Charges, ICEAA2017, Verona, Italy, Sept. 11 - 15, 2017.
- Multiscale Finite Element Method and Geometric Perturbation of Laminated Cores, ICEAA2017, Verona, Italy, Sept. 11 - 15, 2017.
- Multiscale and Harmonic Balance FEM for the Eddy Current Problem in Laminated Iron Cores, CEFC 2016, Miami, USA, Nov. 13 - 16, 2016. pdf
- Various Two Dimensional Multiscale Finite Element Formulations for the Eddy Current Problem in Iron Laminates, EMF 2016, Lyon, France, April 12 - 14, 2016. pdf (highlighted talk)
- Multi-Scale Finite Element Method to Simulate Eddy Currents in Laminated Iron, SCEE 2014, Wuppertal, Germany, July 22 - 25, 2014. pdf
- Two-Scale Homogenization of the Nonlinear Eddy Current Problem with FEM, Compumag 2013, Budapest, June 30 - July 4, 2013. pdf
- FEM: Domain Decomposition and Homogenization for Maxwell's Equations of Large Scale Problems, TCSE Vienna Workshop 2012, Vienna, February 13, 2012. pdf
- Homogenization of the Eddy Current Problem in 2D, 14th International IGTE Symposium 2010, Graz, Austria, Sept. 19 - 22, 2010. pdf
- Novel Variation Formulation for Domain Decomposition to solve Maxwell's Equations, DSPDES 2010, Barcelona, Spain, June 3, 2010. pdf
Recent Work
- Multiscale Finite Element Method, Harmonic Balance Method and Model Order Reduction for Nonlinear Eddy Currents in Laminations, Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). preprint
- An Approach for Step-Lap Joints Using the Multiscale Finite Element Method Based on the Magnetic Vector Potential, Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). preprint
- Enhanced Technique for Metascreens using the Generalized Finite Element Method, Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). preprint
- An Equilibrated Error Estimator for the Multiscale FEM of a Linear Eddy Current Problem, Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Oct., 2019). preprint
- Effective BH-Curves for Laminated Magnetic Cores, Abstract for CEFC 2020, Pisa, Italy, April 19 - 22, 2020 (submitted, Sept., 2020). preprint
- A Hierarchical Error Estimator for the MSFEM for the Eddy Current Problem in 3D, Abstract for ISTET 2019, Sofia, Bulgaria, July 21 - 23, 2019.
- An Approach to Consider Step-Lap-Joints in the Multiscale Finite Element Method, Abstract for ISTET 2019, Sofia, Bulgaria, July 21 - 23, 2019.
- A Multiscale FEM for the Eddy Current Problem with T, Phi - Phi in Laminated Conducting Media, Digest for Compumag 2019, Paris, France, July 15-19, 2019 (submitted, Jan. 2019). preprint
- A 2D/1D Multiscale Finite Element Method Using the Biot-Savart Field for Synchronous Machines, Digest for Compumag 2019, Paris, France, July 15-19, 2019. preprint
- Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC, Digest for Compumag 2019, Paris, France, July 15-19, 2019.preprint
- MSFEM and MOR to Minimize the Computational Costs of Nonlinear Eddy Current Problems in Laminated Iron Cores, Digest for Compumag 2019, Paris, France, July 15-19, 2019.preprint
- Nonasymptotic Homogenization of Laminated Magnetic Cores, Digest for Compumag 2019, Paris, France, July 15-19, 2019. preprint
- Air Gap and Edge Effect in the 2D/1D-Method with the Magnetic Vector Potential A using MSFEM, Digest for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). preprint
- Simple and Cheap Structural MOR Method for the 2D/1D-MSFEM, Abstract for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). preprint
- A 2D/1D Multiscale FEM Model for the Nonlinear Eddy Current Problem in Thin Sheets, Abstract for CEFC 2018, Hangzhou, China, Oct. 28 - 31, 2018 (submitted, May, 2018). preprint
- MSFEM and MOR to simulate one laminate for electrical machines, Abstract for EMF 2018, Darmstadt, Germany, April 10 - 12, 2018 (submitted, Dec., 2017). preprint
- MOR for the MSFEM of the Eddy Current Problem in Linear Laminated Media, Abstract for MATHMOD 2018, Vienna, Austria, Feb. 21 - 23, 2018 (submitted, Nov., 2017). preprint
- MSFEM for the Linear 2D1D-Problem of Eddy Currents in Thin Iron Sheets, Abstract for MATHMOD 2018, Vienna, Austria, Feb. 21 - 23, 2018 (submitted, Nov., 2017). preprint
- MSFEM with Network Coupling for the Eddy Current Problem of a Toroidal Transformer, Abstract for ISTET 2017, Ilmenau, Germany, July 16 - 19, 2017 (submitted, April, 2017). preprint
- A Mixed Multiscale Finite Element Method with A and J for Eddy Currents in Iron Laminates, Digest for Compumag 2017, Daejeon, Korea, June 18 - 22, 2017 (submitted, Jan., 2017). preprint
Publications
- K. Hollaus, M. Schöbinger, "A Mixed Multiscale FEM for the Eddy-Current Problem With T, Phi - Phi in Laminated Conducting Media", IEEE Transactions on Magnetics, vol. 56, no. 4, 4 pages, 2020. online
- K. Hollaus, J. Schöberl, M. Schöbinger, "MSFEM and MOR to Minimize the Computational Costs of Nonlinear Eddy-Current Problems in Laminated Iron Cores", IEEE Transactions on Magnetics, vol. 56, no. 2, 4 pages, 2020. online
- M. Leumüller, B. Auinger, H. Hackl, J. Schöberl and K. Hollaus, "Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC", COMPUMAG, 4 pages, Oct. 2019. online
- M. Schöbinger, K. Hollaus, I. Tsukerman, "Nonasymptotic Homogenization of Laminated Magnetic Cores", IEEE Transactions on Magnetics, vol. 56, no. 2, 4 pages, 2020. online
- K. Hollaus, M. Schöbinger, "Air Gap and Edge Effect in the 2D/1D-Method with the Magnetic Vector Potential A using MSFEM", IEEE Transactions on Magnetics, vol. 56, no. 1, 5 pages, 2020. online
- K. Hollaus, "A MSFEM to simulate the eddy current problem in laminated iron cores in 3D" COMPEL, vol. 38 no. 5, pp. 1667-1682, 2019. online
- M. Schöbinger, S. Steentjes, K. Hameyer, J. Schöberl, K. Hollaus, "MSFEM for the Eddy Current Problem in a Laminated Core Including Hysteresis", IEEE Transactions on Magnetics, vol. 55, no. 8, 9 pages, 2019. online
- M. Schöbinger, J. Schöberl, K. Hollaus, "Multiscale FEM for the Linear 2D/1D-Problem of Eddy Currents in Thin Iron Sheets", IEEE Transactions on Magnetics, vol. 55, no. 1, 12 pages, 2019. online
- K. Hollaus, J. Schöberl, "Some Two-Dimensional Multiscale Finite Element Formulations for the Eddy Current Problem in Iron Laminates", IEEE Transactions on Magnetics, vol. 54, no. 4, 7401716, 16 pages, 2018. online
- K. Hollaus, M. Schöbinger, "Multiscale finite element method for perturbation of laminated structures", In ICEAA 2017, pp. 1262-1263. online
- M. Schöbinger, K. Hollaus, I. Tsukerman, "Homogenization of laminated magnetic cores and the role of surface charges", In ICEAA 2017, pp. 971-972. online
- Markus Schöbinger, J. Schöberl, K. Hollaus, "An Error Estimator for Multiscale FEM for the Eddy-Current Problem in Laminated Materials", IEEE Transactions on Magnetics, vol. 54, no. 3, 7203204, 4 pages, 2018. online
- Markus Schöbinger, J. Schöberl, K. Hollaus, "An Efficient Reformulation of a Multiscale Method for the Eddy Current Problem," COMPEL, vol. 36, pp. 1421-1429, 2017.
- K. Hollaus, "Multiscale and Harmonic Balance FEM for the Eddy Current Problem in Laminated Iron Cores". In Proc. 17th IEEE CEFC 2016, 13-16 Nov. 2016, Miami, USA.
- H. Davtjan, M. Kaltenbacher, J. Schöberl, M. Schöbinger, K. Hollaus, "Multiscale finite element methods for eddy current problems in laminated iron MSFEM4ECP", Technical article, Newsletter, International Compumag Society, Volume 23 No. 2., pp. 3 - 13, July, 2016.
- K. Hollaus, J. Schöberl, "Multi-scale FEM and magnetic vector potential A for 3D eddy currents in laminated media," COMPEL, vol. 34, no. 5, pp. 1598-1608, 2015. online
- K. Hollaus, J. Schöberl, "A Higher Order Multi-Scale FEM with A for 2D Eddy Current Problems in Laminated Iron", IEEE Transactions on Magnetics, vol. 51, no. 3, 7402804, 4 pages, March, 2015. online
- K. Hollaus, A. Hannukainen, J. Schöberl, "Two-Scale Homogenization of the Nonlinear Eddy Current Problem with FEM," IEEE Transactions on Magnetics, vol. 50, no. 2, pp. 413-416, Feb., 2014. online
- K. Hollaus, M. Huber, J. Schöberl, P. Hamberger, "A Linear FEM Benchmark for the Homogenization of the Eddy Currents in Laminated Media in 3D," International Federation of Automatic Control IFAC, vol. 7, no. 1, pp. 1190-1194, 2012. preprint
- K. Hollaus, J. Schöberl, "Homogenization of the Eddy Current Problem in 2D," Proceedings of the 14th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, pp. 154-159, Graz, Austria, September 19-22, 2010. preprint
- K. Hollaus, D. Feldengut, J. Schöberl, M. Wabro, D. Omeragic, "Nitsche-type Mortaring for Maxwell's Equations," Progress In Electromagnetics Research Symposium Proceedings, 397 - 402, July 5-8, Cambridge, USA 2010. preprint
- K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, C. Stockreiter, "Extraction of Circuit Parameters from PCB by FDTD and SIBC," COMPEL, vol. 28, no. 4, pp. 1091-1101, 2009. online
- Björk et al., "System-Level Design," in G.Q. Zhang, A.J. van Roosmalen "More than Moore - Creating High Value Micro/Nanoelectronics Systems," Springer, pp. 305-330, 2009. online
- K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, and G. Plieschenegger, "Simulation of Crosstalk on Printed Circuit Boards by FDTD, FEM, and a Circuit Model," IEEE Transactions on Magnetics, vol. 44, pp. 1486-1489, April 2008. online
- K. Hollaus, O. Bíró, K. Preis and C. Stockreiter, "Edge finite elements coupled with a circuit for wave problems," Internat. Conf. on Electromagnetics in Advanced Applications, ICEAA 2007, IEEE Xplore, pp. 956-959, Torino, Italy, 17th –21st Sept. 2007. online
- B. Weiß, O. Bíró, P. Caldera, K. Hollaus, G. Paoli, K. Preis, "A Multigrid Algorithm for the Transfinite-Element Time-Domain Method using the A, V -Formulation", IEEE Transactions on Magnetics, vol. 43, pp. 1353-1356, April 2007. online
- C. Stockreiter, G. Matzenauer, O. Biro, P. Caldera, G. Paoli, K. Hollaus, K. Preis, B. Weiss, "Transfinite Element Method Using the A, v-Potential Formulation With Edge Elements in the Frequency Domain," IEEE Transactions on Magnetics, vol. 43, pp. 1349-1352, April 2007. online
- W. Renhart, K. Hollaus, C. Magele and G. Matzenauer, "Radiation of USB-WLAN Antenna Influenced by Human Tissue and by Notebook Enclosure," IEEE Transactions on Magnetics, vol. 43, pp. 1345-1348, April 2007. online
- B. Weiß, O. Bíró, P. Caldera, K. Hollaus, G. Paoli, K. Preis, C. Stockreiter, "On the convergence of the transfinite-element method," COMPEL, vol. 26, no. 3, pp. 600-611, 2007. online
- G. Matzenauer, O. Bíró, K. Hollaus, K. Preis, W. Renhart, "Perfectly Matched Layers for T, Phi Formulation," COMPEL, vol. 26, no. 3, pp. 612-625, 2007. online
- H. Scharfetter, K. Hollaus, J. Rosell-Ferrer, R. Merwa, "Single-step 3-D image reconstruction in magnetic induction tomography: Theoretical limits of spatial resolution and contrast to noise ratio," Annals of Biomedical Engineering, pp. 1-13, 2006. online
- K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, W. Renhart, C. Stockreiter and B. Weiß, "Simulation of Microstrips on Printed Circuit Boards," Tagungsband des 51. Internationalen Wissenschaftliches Kolloquium der TU Ilmenau, ISBN 3-938843-16-0, 5 pages, Ilmenau, Germany, 11-15, September 2006. preprint
- K. Hollaus, O. Bíró, K. Preis, C. Stockreiter and B. Weiß, "S-Parameter Extraction from Structures on Printed Circuit Boards by FDTD and Surface Impedance Boundary Condition," Proceedings of The Twelfth IEEE Conference on Electromagnetic Field Computation, ISBN 1-4244-0319-7, p. 378, Miami, USA, April 30th-May 3rd, 2006. online
- K. Hollaus, O. Bíró, G. Matzenauer, K. Preis, C. Stockreiter, B. Weiß, P. Caldera and G. Paoli, "Comparison of FETD and FDTD to Simulate Micro-strip Structures on PCBs," Proceedings of The Sixth International Conference on Computation in Electromagnetics CEM 2006, ISBN 3-8007-2957-1, p. 209-210, Aachen, Germany, April 4-6, 2006. preprint
- B. Weiß, O. Bíró, K. Hollaus, K. Preis, P. Caldera, G. Paoli, "A Multigrid Solver for Time Harmonic Three-Dimensional Electromagnetic Wave Problems," IEEE Transactions on Magnetics, vol. 42, pp. 639-642, April 2006. online
- K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, C. Stockreiter, and B. Weiss, "Electromagnetic Field Computation of Simple Structures on Printed Circuit Boards by the Finite-Element Method," IEEE Transactions on Magnetics, vol. 42, pp. 815-818, April 2006. online
- B. Wagner, K. Hollaus, Ch. Magele, "Reconstruction of the anisotropic complex conductivity distribution of a human thigh in three dimensions," IEEE Transactions on Magnetics, vol. 42, pp. 1171-1174, April 2006. online
- P. Brunner, R. Merwa, A. Missner, J. Rosell, K. Hollaus, H. Scharfetter, "Reconstruction of the shape of conductivity spectra using differential multi-frequency magnetic induction tomography", Physiol. Meas., vol. 27, no. 5, pp. 237-248, May 2006. online
- R. Merwa, P. Brunner, A. Missner, K. Hollaus, H. Scharfetter, "Solution of the inverse problem of magnetic induction tomography (MIT) with multiple objects: analysis of detectability and statistical properties with respect to the reconstructed conducting region", Physiol. Meas., vol. 27, no. 5, pp. 249-259, May 2006. online
- K. Hollaus, B. Wagner, O. Bíró, "Simulation of the quasi-static electric field by an electric current vector potential approximated by edge elements", COMPEL, vol. 24, no. 2, pp. 581-590, 2005. online
- B. Wagner, K. Hollaus, Ch. Magele, "Reconstruction of the anisotropic complex conductivity distribution in 3D", COMPEL, vol. 24, no. 2, pp. 558-564, 2005. online
- K. Hollaus, O. Bíró, P. Caldera, G. Matzenauer, G. Paoli, K. Preis, B. Weiss, "Simulation of Simple Topologies on a PCB by a Frequency and a Time Domain Method," Proceedings of Joint 9th ICEAA `05 and 11th EESC `05, Torino, Italy, 12th Sept. – 16th Sept. 2005, ISBN 88-8202-094-0, pp. 893-896.preprint
- K. Hollaus, O. Bíró, "Comparison of Tetrahedral Edge Finite-Elements Using Different Potential Formulations,” IEEE Transactions on Magnetics, vol. 41, pp. 1676-1679, May 2005. online
- K. Hollaus, O. Bíró, C. Gerstenberger, K. Preis, R. Stollberger, B. Wagner, "Effect of Stray Capacitances on Bio-Impedances in Quasi-Static Electric Field,” IEEE Transactions on Magnetics, vol. 41, pp. 1940-1943, May 2005. online
- R. Merwa, K. Hollaus, P. Brunner, H. Scharfetter, "Solution of the inverse problem of magnetic induction tomography (MIT)", Physiol. Meas., vol. 26, no. 2, pp. 241-250, April 2005. online
- K. Hollaus, C. Gerstenberger, C. Magele, H. Hutten, "Accurate Reconstruction Algorithm of the Complex Conductivity Distribution in Three Dimensions," IEEE Transactions on Magnetics, vol. 40, pp. 1144-1147, March 2004. online
- K. Hollaus, C. Magele, R. Merwa, H. Scharfetter, "Numerical Simulation of the Eddy Current Problem in Magnetic Induction Tomography for Biomedical Applications by Edge Elements,” IEEE Transactions on Magnetics, vol. 40, pp. 623-626, March 2004. online
- K. Hollaus, C. Magele, R. Merwa, H. Scharfetter, "Fast calculation of the sensitivity matrix in magnetic induction tomography by tetrahedral edge finite elements and the reciprocity theorem", Physiol. Meas., vol. 25, no. 1, pp. 159-168, February 2004. online
- K. Hollaus, B. Weiß, Ch. Magele, H. Hutten, "Geometric multigrid to accelerate the solution of the quasi-static electric field problem by tetrahedral finite elements", Physiol. Meas., vol. 25, no. 1, pp. 169-179, February 2004. online
- R. Casañas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell, "Measurement of liver iron overload by magnetic induction using a planar gradiometer: preliminary human results", Physiol. Meas., vol. 25, no. 1, pp. 315-323, February 2004. online
- H. Scharfetter, S. Rauchenzauner, R. Merwa, O. Bíró, K. Hollaus, "Planar gradiometer for magnetic induction tomography (MIT): theoretical and experimental sensitivity maps for a low-contrast phantom", Physiol. Meas., vol. 25, no. 1, pp. 325-333, February 2004. online
- R. Merwa, K. Hollaus, O. Bíró, H. Scharfetter, "Detection of brain oedema using magnetic induction tomography: A feasibility study of the likely sensitivity and detectability", Physiol. Meas., vol. 25, no. 1, pp. 347-354, February 2004. online
- R. Casañas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell, "In-vitro and in-vivo measurement of iron concentration in human hepatic tissue by magnetic induction methods," Proc. 25th Annual Int. Conf. IEEE, Eng. in Med. and Biol. Society, vol. 4, pp. 3064-3067, Sept. 2003. online
- K. Hollaus, R. Stollberger, B. Wagner, C. Gerstenberger, Ch. Magele, H. Hutten, "Simulations of the bio-impedance of the human thigh by the finite element method in 3D", Tagungsband des 48. Internationalen Wissenschaftliches Kolloquium der TU Ilmenau, ISSN 1619-4098, pp. 425-426, Ilmenau, Germany, 22-25, September 2003. preprint
- R. Merwa, K. Hollaus, B. Brandstätter, H. Scharfetter, "Numerical solution of the general 3D eddy current problem for magnetic induction tomography (spectroscopy)", Physiol. Meas., vol. 24, no. 2, pp. 545-554, May 2003. online
- B. Brandstätter, K. Hollaus, Ch. Magele, M. Michael, R. Merwa, H. Scharfetter, H. Hutten, "Direct estimation of Cole parameters in multifrequency EIT using a regularized Gauss-Newton method", Physiol. Meas., vol. 24, no. 2, pp. 437-448, May 2003. online
- K. Hollaus, O. Bíró, B. Brandstätter, S. P. Cermak, H. Zangl, G. Brasseur, "Design and Optimization of a Multi-Induction-Loop Access Control System", Proceedings of the International Symposium on Electromagnetic Compatibility, EMC Europe 2002, vol. 2, pp. 883-888, Sorrent, Italy, September 9-13, 2002. preprint
- K. Hollaus, O. Bíró, "Derivation of a Complex Permeability from the Preisach Model," IEEE Transactions on Magnetics, vol. 38, pp. 905-908, March 2002. online
- D. Rodger, P. C. Coles, O. Bíró, K. Hollaus, J. Pávó, "An Aluminium Plate Benchmark for ECT", in Electromagnetic Nondestructive Evaluation (V), eds. J. Pávó et al, IOS Press, Amsterdam, vol. 21, pp. 46-48, 2001. online
- O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Electromagnetic Nondestructive Evaluation (V), eds. J. Pávó et al, IOS Press, Amsterdam, vol. 21, pp. 11-15, 2001. online
- J. Pávó, O. Bíró, K. Hollaus, "Calculation of the field map from the measurement data of the fluxset sensor", COMPEL, vol. 20, no. 2, pp. 404-416, 2001. online
- K. Hollaus, O. Bíró, "A FEM of the Eddy Current Losses in Thin Ferromagnetic Sheets", Proceedings of the 9th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, pp. 152-157, Graz, Austria, September 11-13, 2000. preprint
- K. Hollaus, O. Bíró, "A FEM Formulation to Treat 3D Eddy Currents in Laminations," IEEE Transactions on Magnetics, vol. 36, pp. 1289-1292, July 2000. online
- D. Rodger, P. C. Coles, O. Bíró, K. Hollaus, J. Pávó, "An Aluminium Plate Benchmark for ECT", in Short Papers of The Sixth International Workshop on Electromagnetic Nondestructive Evaluation, ISBN 9-634206-42-5, Budapest, Hungary, pp. 39-40, 28th-30th July, 2000.
- O. Bíró, K. Hollaus, J. Pávó and K. Preis, "Numerical computation of the magnetic field due to a crack in a conducting plate", in Short Papers of The Sixth International Workshop on Electromagnetic Nondestructive Evaluation, ISBN 9-634206-42-5, Budapest, Hungary, pp. 7-8, 28th-30th July, 2000.
- K. Hollaus, O. Bíró, "Estimation of 3-D eddy currents in conducting laminations by an anisotropic conductivity and a 1-D analytical solution", COMPEL, vol. 18, no. 3, pp. 494-503, 1999. online