Modelling for isothermal cavitation with a four-equation model

Eric Goncalvès da Silva (1) , Boris Charrière (1)

1 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

In a recent study, an original formulation for the mass transfer between phases has been proposed to study one-dimensional inviscid cavitating tube problems. This mass transfer term appears explicitly as a source term of a void ratio transport-equation model in the framework of the homogenous mixture approach. Based on this generic form, a two-dimensional preconditioned Navier-Stokes one-fluid solver is developed to perform realistic cavitating flows. Numerical results are given for various inviscid cases (underwater explosion, bubble collapse) and unsteady sheet cavitation developing along Venturi geometries at high Reynolds number. Comparisons with experimental data (concerning void ratio and velocity profiles, pressure fluctuations) and with a 3-equation model are presented.

Mots clés: Cavitation; Mass transfer; Homogeneous model; RANS simulation

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Eric Goncalvès da Silva, Boris Charrière. Modelling for isothermal cavitation with a four-equation model. International Journal of Multiphase Flow, 2014, 59, pp.54-72. ⟨10.1016/j.ijmultiphaseflow.2013.10.015⟩. ⟨hal-00912579⟩