A numerical model to predict unsteady cavitating flow behaviour in inducer blade cascades - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2002

A numerical model to predict unsteady cavitating flow behaviour in inducer blade cascades

Résumé

The cavitation behaviour of a four-blade rocket engine turbopump inducer is simulated. A 2D numerical model of unsteady cavitation was applied to a blade cascade drawn from the inducer geometry. The physical model is based on a homogeneous approach of cavitation, coupled with a barotropic state law for the liquid/vapour mixture. The numerical resolution uses a pressure-correction method derived from the SIMPLE algorithm and a finite volume discretization. Unsteady behaviour of sheet cavities attached to the blade suction side depends on the flow rate and cavitation number. Two different unstable configurations of rotating cavitation, respectively sub-synchronous and super-synchronous, are identified. The mechanisms that are responsible for these unstable behaviours are discussed, and the stress fluctuations induced on the blade by the rotating cavitation are estimated.

Dates et versions

hal-00211958 , version 1 (09-01-2020)

Licence

Paternité

Identifiants

Citer

Olivier Coutier-Delghosa, Jean-Luc Reboud, Y. Courtot, Regiane . Fortes Patella. A numerical model to predict unsteady cavitating flow behaviour in inducer blade cascades. 4th International Conference on Launcher Technology, Dec 2002, Liège, Belgium. ⟨hal-00211958⟩
196 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More