Blog - news ITS Acoustique - Results from #21

Simulation of acoustic and aerodynamic performance of silencers with CFD, FEM & BEM calculation tools

Details: Published: 17 January 2018

Computational Fluid Dynamics (CFD), to which reference is often made by using english wording, is a computational method for studying the motion of a gas or of a liquid, or its effects, by the numerical resolution of the equations that govern its behavior, considering a mesh of the studied system.

The Finite Element Method (FEM) and the Boundary Element Method (BEM), to which reference is also often made by using english wording, are intended to numerically solve equations such as those...

Room acoustics simulation by ray tracing with ITS

Details: Published: 18 December 2017

Ray tracing is a method for calculating the path of acoustic waves of which applications are possible for enclosed spaces, industrial or not, in relation to acoustical quality consideration.

Input data for such computations are obviously the geometry of the considered space and the distribution of absorbing surfaces for which material quantity, sound absorption coefficient (and sometimes scattering coefficient) one should account, being either floor or walls or roof (whatever its shape is), or...

Sizing of reactive silencers with non-perforated tubes with the simulation software SILDIS^®

Details: Published: 12 June 2017

Sizing of reactive silencers with non-perforated tubes is a subject that acousticians are far from having covered.

The approach for the prediction of acoustic and aerodynamic performance of reactive silencers, involving the consideration of various input data (e.g. thermodynamic parameters, noise reduction criteria, back pressure criteria, size of the soundproofing device), is computationally intensive, what is a serious obstacle for the design of tailor made solutions in a short period of...