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An algebraic subgrid scale finite element method for the convected Helmholtz equation in two dimensions with applications in aeroacoustics

Author
Guasch, O.; Codina, R.
Type of activity
Journal article
Journal
Computer methods in applied mechanics and engineering
Date of publication
2007-09
Volume
196
Number
45-48
First page
4672
Last page
4689
DOI
https://doi.org/10.1016/j.cma.2007.06.001 Open in new window
URL
http://www.sciencedirect.com/science/article/pii/S0045782507002381 Open in new window
Abstract
An algebraic subgrid scale finite element method formally equivalent to the Galerkin Least-Squares method is presented to improve the accuracy of the Galerkin finite element solution to the two-dimensional convected Helmholtz equation. A stabilizing term has been added to the discrete weak formulation containing a stabilization parameter whose value turns to be the key for the good performance of the method. An appropriate value for this parameter has been obtained by means of a dispersion analy...
Keywords
Aeroacoustics, Aerodynamic sound, Convected Helmholtz equation, Convected wave equation, Subgrid scale stabilization
Group of research
(MC)2 - UPC Computational continuum mechanics
ANiComp - Numerical analysis and scientific computation

Participants