Author(s)

E. Larrey, P. Ferrand & F. Leboeuf

Abstract

Resolution of the pressure equation by the boundary element method in multistaged turbomachineries E. Larrey", P. Ferrand\ F. Leboeuf^ ^oc^e MET^/IFI^ Ec%% France ^ Laboratoire de Mechanique des Fluides et d'Acoustique de UEcole Centrale de Lyon, ABSTRACT The application of the BEM to the resolution of the pressure equation in a multistaged turbomachinery is presented. The numerical treatment of the pressure equation is briefly described. Some improvements to the classical BEM are presented that ensures the accuracy of the results. They are necessary to ensure a good accuracy of the results in a curved geometry as encountered in turbomachinery. The technique of resolution in a complete stage of turbomachinery (stator+ rotor) is presented. The aim is to solve the pressure equation in such a case as easily as in the case of a simple row. Firstly a subdomain technique is presented that allows to take into account a moving mesh. Secondly the management of the

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