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Numerical Modelling of Aerodynamic Noise in Compressible Flows

DOI: 10.4236/ojfd.2012.23007, PP. 65-69

Keywords: Computational Aeroacoustics, Noise, Pressure Waves, Cavity Noise

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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.


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