Numéro : 2150 - Year : 1991
Modelling of partially cavitating flows using a potential based method
A. ROWE, INSTITUT DE MECANIQUE DE GRENOBLE
P .-E. MENDELSOHN, ECOLE D'HYDRAULIQUE & DE MECANIQUE DE GRENOBLE -I.N.P.G.
P. REBOUL, ECOLE D'HYDRAULIQUE & DE MECANIQUE DE GRENOBLE -I.N.P.G.
A model is presented with a view to developing a numerical code that takes into account
partial cavitation in the operation of propellers. This model is based on the panel method applied to potential flow calculation, a scheme that is well-suited to advanced numerical calculation codes for propeller performance [see J.E. KERWIN, T. MAITRE, A. ROWE]. As cavitation relating to marine propellers is in most cases partial cavitation, a closed cavity mode is used: Its industrial interest has been demonstrated in the case of ultracentrifugal pumps The difficulties which arise in the use of such a model in the framework of the so-called potential method" are then examined. A comparison between this method and the MPPM (Minimization Process Panel Method) minimization method, the validity of which is nowadays well established, but whose complexity makes it difficult to apply to a numerical propeller calculation code, shows the efficiency of the new method.