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Sound Field Modeling in Architectural Acoustics using a Diffusion Equation Based Model
Fortin, Nicolas; Picaut, Judicaël; Billon, Alexis et al.
20093rd annual European COMSOL Conference
 

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Keywords :
Acoustics; Room acoustics; Diffusion model
Abstract :
[en] In this paper, an implementation of a model for room-acoustic predictions in COMSOL Multiphysics is presented. The model (called diffusion model) is based on the solving of diffusion equations instead of classical wave equations and allows simulating the sound propagation in complex geometries at high frequency. Instead of using COMSOL Multiplysics to solve directly the problem, a specific tool has been developed. It is composed of a user-friendly interface (I-Simpa) which manipulates all the physical data of the problem (geometries, acoustic properties and elements…) and generates an interoperability script to execute COMSOL Multiplysics via the generation of .m file scripts. Then, numerical results are processed by I-Simpa for the acoustic post-treatment and results display, like sound levels, reverberation times…
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Fortin, Nicolas
Picaut, Judicaël
Billon, Alexis ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electroacoustique, acoustique appliquée et éclairage
Valeau, Vincent
Sakout, Anas
Language :
English
Title :
Sound Field Modeling in Architectural Acoustics using a Diffusion Equation Based Model
Publication date :
October 2009
Event name :
3rd annual European COMSOL Conference
Event organizer :
Comsol
Event place :
Milan, Italy
Audience :
International
Additional URL :
Funders :
ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie [FR]
Available on ORBi :
since 19 February 2010

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