Cavitation has nowadays several interesting applications in many areas. The simulation of this cavitation phenomena is a challenging issue in developing rigorous numerical methodologies. Indeed, the cavitation is often associated with undesirable phenomena such as the drop-in performance of hydraulic machines, erosion caused by the collapse of vapor bubbles, vibrations or even noise pollution. Thus, numerical simulations can help to avoid these undesirable effects.
In this paper, we proposed an implicit numerical method to simulate two-dimensional unsteady incompressible fluid flow in the Venturi 8◦. This numerical simulation method is integrated in the Open FOAM platform. It is then applied to turbulent cavitating flow problems a venturi using LES. The use of an LES model can be considered as an interesting alternative of the RANS and DNS simulations. It allows to verify the required resolution level for a correct prediction of the experimental behavior.
The results obtained from our numerical simulation are compliant with the experimental data. The analysis of these results demonstrates the possibility of using the proposed method to calculate unsteady flows in Venturi.