Talks and Poster Presentations (with Proceedings-Entry):
M. Kaltenbacher, A. Hüppe:
"Advanced Finite Element Formulation for the Convective Wave Equation";
Talk: Euronoise 2018,
Kreta;
05-27-2018
- 05-31-2018; in: "Euronoise 2018",
(2018),
ISSN: 2226-5147;
291
- 296.
English abstract:
The convective wave equation models wave propagation in owing media by including convection
and refraction e ects. Thereby, the primary physical quantity is the scalar acoustic potential, which is
related to the acoustic pressure by the substantial derivative w.r.t time scaled by the mean density of
the medium. A standard Finite Element (FE) formulation of this partial di erential equation results
in spurious modes and may even become unstable. Therefore, we present a FE formulation, which
preserves the skew symmetry of the convective wave operator resulting in a stable computational
scheme independent of the Mach number. The properties are studied by performing an eigenvalue
analysis.
Electronic version of the publication:
https://publik.tuwien.ac.at/files/publik_272558.pdf
Created from the Publication Database of the Vienna University of Technology.