3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-725-C5-728
Etude de la propagation dans un fluide par la méthode des volumes finisM.A. BOHEAS1 and V. MARTIN2
1 Laboratoire de Mécanique et d'Acoustique, CNRS, 13402 Marseille cedex 20, France
2 IMT, 13451 Marseille cedex, France
The study of temporal acoustic problems, linear or not, can be carried out by solving Navier-Stokes equations. The finite volume method is chosen in which the compressibility is introduced by the law of behaviour. In that case, constant isentropy is taken into account. After a short description of the basic equations, a 1D example shows how is used the boundary condition of radiation at infinity for the plane wave. Added to the calculation process a feedback loop has to control a secondary acoustic source for active noise cancellation.
© EDP Sciences 1994