Calculs couplés fluide/structure en formulation pression/déplacement axisymétrique harmonique
Keywords:
fluid-structure interaction, pressure-displacement formulation, harmonic axisymmetric model, modal analysis, mode coupling, added massAbstract
This paper deals with numerical developments carried out within a commercial finite element code in order to perform modal analysis on coupled fluid-structure problems for axi-symmetric geometry, with a pressure-displacement formulation. A new finite element is developed in the Ansys code: the theoretical bases of such an element are presented, together with elementary validation. An industrial application is then exposed: a modal analysis of a naval propulsion nuclear reactor is performed with the new fluid finite element developed in Ansys.
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