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 so...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.展开更多
文摘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.
