URANS Computations of Cavitating Flow around a 2-D Wedge by Compressible Two-Phase Flow Solver

Abstract

This paper deals with the computation of unsteady cavitating flow around a twodimensional wedge by using Unsteady Reynolds Averaged Navier-Stokes (URANS) flow solver. Because of accuracy deterioration problem due to excessive numerical dissipations for low Mach number unsteady flow, properly scaled RoeM and AUSMPW+ numerical flux schemes are used to accurately compute unsteady cavitating flow. Fast Fourier Transform (FFT) analysis results of experiments and computations are compared to show similar dominant frequencies of shedding vortices. Shedding pattern and location of vortices are also compared to show similar behavior of each flow result.