TITLE:
Numerical Modelling of Aerodynamic Noise in Compressible Flows
AUTHORS:
Sławomir Dykas, Sebastian Rulik, Włodzimierz Wroblewski
KEYWORDS:
Computational Aeroacoustics; Noise, Pressure Waves; Cavity Noise
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.2 No.3,
September
21,
2012
ABSTRACT: The solution of the AeroAcoustics (CAA) problems by means of the Direct Numerical Simulation (DNS) or even the Large Eddy Simulation (LES) for a large computational domain is very time consuming and cannot be applied widely for engineering applications. In this paper the in-house CFD and CAA codes are presented. The in-house CFD code is based on the LES approach whereas the CAA code is an acoustic postprocessor solving the non-linearized Euler equations for fluctuating (acoustic) variables. These codes are used to solve the aerodynamically generated sound field by a flow over a rectangular cavity with inlet Mach number 0.53.