A Mixed Displacement-based Finite Element Formulation for Acoustic Fluid-structure Interaction
نویسندگان
چکیده
The solutions of fluid-structure interaction problems, using displacement-based finite element formulations for acoustic fluids, may contain spurious non-zero frequencies. To remove this deficiency, we present here a new formulation based on a three-field discretization using displacements, pressure and a “vorticity moment” as variables with an appropriate treatment of the boundary conditions. We propose specific finite element discretizations and give the numerical results of various example problems.
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