Associate Prof. Dr. Lothar Nannen

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Address

Institute for Analysis and Scientific Computing
Wiedner Hauptstrasse 8-10
Raum DA 03 F22
1040 Wien, Austria

Tel: +43 1 58801 10120
Email: Lothar Nannen

Research Interests

finite element methods, scattering and resonance problems in open systems, transparent boundary conditions

Projects

Recent Preprints

Publications

  1. Halla, M., Hohage, T., Nannen, L., Schöberl, J. (2016) Hardy Space Infinite Elements for Time Harmonic Wave Equations with Phase and Group Velocities of Different Signs. Numerische Mathematik, 133(1): 103-139 online.
  2. Halla, M., Nannen, L. (2015) Hardy space infinite elements for time-harmonic two-dimensional elastic waveguide problems. Wave Motion, online, abstract.
  3. Hohage, T., Nannen, L. (2015) Convergence of infinite element methods for scalar waveguide problems. BIT Numerical Mathematics, 55(1):215-254, online.
  4. Nannen, L. , Hohage, T. , Schädle, A., Schöberl. J. (2013). Hardy space method for exterior Maxwell problems. Oberwolfach Report.
  5. Halla, M., Hohage, T., Nannen, L., Schöberl, J. (2013) Hardy space method for waveguides. Oberwolfach Report.
  6. Nannen, L. , Hohage, T. , Schädle, A., Schöberl. J. (2013). Exact Sequences of High Order Hardy Space Infinite Elements for Exterior Maxwell Problems. SIAM J. Scientific Computing, 35(2): A1024-A1048. online, arxiv, extended abstract.
  7. Hein, S., Koch, W., Nannen, L. (2012). Trapped modes and Fano resonances in two-dimensional acoustical duct-cavity systems. Journal of Fluid Mechanics, 692:257-287. online.
  8. Nannen, L., Schädle, A. (2011). Hardy space infinite elements for Helmholtz-type problems with unbounded inhomogeneities. Wave Motion, 48(2):116-129. online.
  9. Hein, S., Koch, W., Nannen, L. (2010). Fano resonances in acoustics. Journal of Fluid Mechanics, 664:238-264. online.
  10. Hohage, T., Nannen, L. (2009). Hardy space infinite elements for scattering and resonance problems. SIAM J. Num. Analysis, 47:972-996. online.

Other stuff

  • High order transparent boundary conditions for the Helmholtz equation. Survey of PML and HSM for Helmholtz scattering problems
  • Hardy-Raum Methoden zur numerischen Lösung von Streu- und Resonanzproblemen auf unbeschränkten Gebieten. PhD thesis, Universität Göttingen, Der Andere Verlag, ISBN 978-3-89959-742-4. online

Lecture notes

Programms

  • ngs-waves: Add-on to the finite element package ngsolve for acoustic and electromagnetic scattering and resonance problems.