Aeroacoustics investigation of unsteady incompressible cavity flow

Abstract

In this study, unsteady incompressible flow field and aerodynamically generated noise of 2D and 3D cavity flows are investigated. In the case of 2D flow fields, standard k-epsilon, standard k-omega and SST k-omega is used and in the 3D case, flow field is computed using standard k-omega turbulence model. All numerical results are compared and validated with experimental measurement for Low Reynolds and Mach numbers. All unsteady flow fields results are used to compute a cavity noise using Ffowcs William - Hawking (FW-H) Acoustics Analogy. In the case of 3D cavity, the effect of quadrapole terms on the aerodynamically generated noise is investigated defining permeable interior surface.