TY - JOUR T1 - A Low Frequency Model for Acoustic Propagation in a 2D Flow Duct: Numerical Computation JO - Communications in Computational Physics VL - 2 SP - 508 EP - 524 PY - 2012 DA - 2012/12 SN - 11 DO - http://doi.org/10.4208/cicp.181209.040111s UR - https://global-sci.org/intro/article_detail/cicp/7375.html KW - AB -

In this paper we study a low frequency model for acoustic propagation in a 2D flow duct. For some Mach profile flow, we are able to give a well-posedness theorem. Its proof relies on a quasi-explicit expression of the solution which provides us an efficient numerical method. We give and comment numerical results for particular linear, tangent and quadratic profiles. Finally, we give a numerical validation of our asymptotic model.