Comsol Plus 2011

Models and tutorials and stuff for Comsol. Files to help work with the program COMSOL Multiphysics.
Year: 2011
Producer and writer: COMSOL
Language: English
This note is devoted to a domain decomposition method solving
the Helmholtz equation in the frequency domain. This is meant for
computing the acoustic profile of a cavity when forced at a given fre-
quency k. This profile depends, of course , on the global geometry of
the cavity, that we call here domain and denote it by Ω. Let a par-
tition of the cavity Ω be given, as a union of disjoint subsets, called
subdomains: Ω = ∪Ωi. We need to perform this global computa-
tion as a sequence of local computations, each computation beeing
performed on a single subdomain Ωi, without any knowledge of the
geometry and meshing of the other subdomains. This is useful when
the global geometry is too big to be stored in a single computer, or
when such a computation is performed in a distributed process, each
computer knowing only about the geometry of a subdomain. In order
to compute the global solution via local computations, one need in-
teraction conditions between subdomains, hence boundary conditions
on the boundaries Γij between subdomains Ωi and Ωj . We give such
boundary conditions for an iterative algorithm, prove its convergence,
and show some simulations performed using Femlab and Matlab pack-
ages.
Product:Comsol Plus 2011
Lanaguage:english
Platform:Winxp/Win7
Size:421 MB