Title :
Simulation of unsteady cavitating flow aound an hydrofoil
Author :
Kanfoudi, Hatem ; Zgolli, Ridha
Author_Institution :
ENIT, Manar Univ., Tunis, Tunisia
Abstract :
A 3D numerical model is proposed in this paper to simulate unsteady cavitating flows aroud hydrofoil NACA66mod. The Reynolds-averaged Navier-Stokes equations are solved for the mixture of liquid and vapor, which is considered as a single fluid with variable density. This variable is expressed as function of the vapor volume fraction. The closure of this variable is provided by the transport equation with a source term TEM. The processes of evaporation and condensation are governed by changes in pressure within the flow. The source terms is implanted in the CFD code ANSYS CFX vl4. The influence of numerical and the physical parameters are presented in details.
Keywords :
Navier-Stokes equations; cavitation; computational fluid dynamics; flow simulation; hydrodynamics; mechanical engineering computing; numerical analysis; two-phase flow; 3D numerical model; ANSYS CFX CFD code; NACA66mod hydrofoil; Reynolds-averaged Navier-Stokes equations; TEM source term; computational fluid dynamics; condensation process; evaporation process; flow simulation; hydrofoil; liquid-vapor mixture; transport equation; unsteady cavitating flow; vapor volume fraction; Cavity resonators; Equations; Liquids; Mathematical model; Numerical models; Three-dimensional displays; growth and collapse; transport equation; turbulence model; vapor pocket;
Conference_Titel :
Renewable Energy Congress (IREC), 2014 5th International
Conference_Location :
Hammamet
Print_ISBN :
978-1-4799-2196-6
DOI :
10.1109/IREC.2014.6826942
