Analysis Of Wave Propagation In Waveguides By FEM Via
Eigenvalue Problem
Author(s)
I. Spacapan, M. Premrov
Abstract
Analysis of wave propagation in waveguides by
FEM via eigenvalue problem
I. Spacapan, M. Premrov
Faculty of Civil Engineering,
University ofMaribor, Slovenia.
Abstract
Several important engineering problems are modelled by infinite
waveguides, where a certain section may be inhomogeneous or have
irregular geometry or obstacles. In such sections the waves may partially
reflect, but in the concatenated homogeneous part of the waveguide, which
stretches to infinity, the waves propagate only away from the source of
excitation, yet some of them may be decaying standing waves. When solving
the dynamics of the waveguide by FEM we have to introduce an artificial
boundary, where radiation conditions have to be properly encountered for
exact results. We are proposing the a procedure, which solves the dynamics
of the waveguide in the frequency domain exactly, but within the error
immanent to discretization in FEM. In addition, this procedure yields a
parametric study of wave propagatio
Keywords
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