[seminar] Seminar Schuhmann, Thursday, 21. 3. 18., 12.15h @Math. Dept!

[Hrvoje Buljan]

Dear colleagues,

I would like to announce a joint ZCI QuantiXLie and Physics and
Mathematics Department seminar:

Title: Enhanced Eigenvalue Formulations in Electromagnetic Field
Simulation for Microwave and Optical Applications

Speaker: Rolf Schuhmann, Theoretische Elektrotechnik, TU Be

Time: Thursday 21.03.2019 12:15
*** Place: Department of Mathematics room 104 ***

Abstract:         Eigenvalue formulations for the electromagnetic wave
equation in frequency domain have been investigated for many decades now,
and can actually be considered as one of the earliest motivations to
develop efficient numerical simulation tools. Dealing with
three-dimensional problems with complicated geometrical shapes, the most
commonly used discretization approaches are Finite Differences, Finite
Integration, and Finite Element methods. As volume grid-based techniques
they share many of their major properties, but also have some important
differences with respect to both practical issues in applications and the
resulting algebraic formulations. The presentation will shortly review
some basic properties of these methods and discuss their relation to
practical issues in modelling typical EM eigenvalue problems. In the main
part, some extensions are presented to handle more challenging setups,
such as dispersive material models, cavities with radiating boundary
conditions, or geometrical parameter variations. Along with the extended
eigenvalue formulations, corresponding enhancements are required for the
algebraic solvers in order to guarantee an efficient and robust overall
simulation process. Applications for these formulations range from typical
resonant microwave structures up to metamaterials and optical components.

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