Numerical analysis of cavitation instabilities in inducer blade cascade - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2005

Numerical analysis of cavitation instabilities in inducer blade cascade

Résumé

The cavitation behavior of a four-blade rocket engine turbopump inducer was simulated by the computational fluid dynamics (CFD) code FINE∕TURBO™. The code was modified to take into account a cavitation model based on a homogeneous approach of cavitation, coupled with a barotropic state law for the liquid∕vapor mixture. In the present study, the numerical model of unsteady cavitation was applied to a four-blade cascade drawn from the inducer geometry. Unsteady behavior of cavitation sheets attached to the inducer blade suction side depends on the flow rate and cavitation number σ⁠. Numerical simulations of the transient evolution of cavitation on the blade cascade were performed for the nominal flow rate and different cavitation numbers, taking into account simultaneously the four blade-to-blade channels. Depending on the flow parameters, steady or unsteady behaviors spontaneously take place. In unsteady cases, subsynchronous or supersynchronous regimes were observed. Some mechanisms responsible for the development of these instabilities are proposed and discussed.
Fichier principal
Vignette du fichier
Pouffary2008.pdf (429.78 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00212011 , version 1 (27-02-2020)

Licence

Paternité

Identifiants

Citer

Benoît Pouffary, Regiane . Fortes Patella, Jean-Luc Reboud. Numerical analysis of cavitation instabilities in inducer blade cascade. ASME 2005 Fluids Engineering Division Summer Meeting, Jun 2005, Houston, United States. ⟨10.1115/FEDSM2005-77357⟩. ⟨hal-00212011⟩
50 Consultations
63 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More