[hal-00944696] Boundary Element and Finite Element Coupling for Aeroacoustics Simulations Download from ift.tt/1u7RD5i Download From ift.tt/113uQNi We consider the scattering of acoustic perturbations in a presence of a flow. We suppose that the space can be split into a zone where the flow is uniform and a zone where the flow is potential. In the first zone, we apply a Prandtl-Glauert transformation to recover the Helmholtz equation. The well-known setting of boundary element method for the Helmholtz equation is available. In the second zone, the flow quantities are space dependent, we have to consider a local resolution, namely the finite element method. Herein, we carry out the coupling of these two methods and present various applications and validation test cases. The source term is given through the decomposition of an incident acoustic field on a section of the computational domains boundary. from HAL : Dernières publications ift.tt/1pxeyHF Download From ift.tt/113uQNi Download from
Posted on: Sat, 08 Nov 2014 00:26:08 +0000
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