La Houille Blanche
Number 2, Avril 2001
|Page(s)||64 - 69|
|Published online||01 July 2009|
Calcul potentiel instationnaire appliqué à l'interaction roue-volute des pompes centrifuges
Interaction impeller-volute in centrifugal pumps : computing potential unsteady phenomena
LEMFI, ESA, CNRS 7067, ENSAM
An algorithm generalizing the singularity method was developed. It allows to take into account the interaction between fixed and mobile cascades. Its principle is based on the summation of discrete vortices distributed periodically on the rotor and stator profiles. The overall matrix, obtained by applying the boundary conditions, takes into account the complexity of the studied machine geometry (presence or not of splitter blades possibly variable pitch of the profiles, etc.) To validate the model and to illustrate the influence of the potential phenomena on the fluctuations in pressure generated by the rotor-stator interaction, we present a theoretical and experimental study undertaken on a centrifugal pump.
© Société Hydrotechnique de France, 2001
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