Numerical Modelling of Aerodynamic Noise in Compressible Flows

Sławomir Dykas, Sebastian Rulik, Włodzimierz Wroblewski

Institute of Power Engineering and Technology, Silesian University of Technology, Gliwice, Poland.

DOI: 10.4236/ojfd.2012.23007                

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.

Keywords

Computational Aeroacoustics; Noise, Pressure Waves; Cavity Noise

Conflicts of Interest

The authors declare no conflicts of interest.

References

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