OJFD  Vol.2 No.3 , September 2012
Numerical Modelling of Aerodynamic Noise in Compressible Flows
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.

Cite this paper
S. Dykas, S. Rulik and W. Wroblewski, "Numerical Modelling of Aerodynamic Noise in Compressible Flows," Open Journal of Fluid Dynamics, Vol. 2 No. 3, 2012, pp. 65-69. doi: 10.4236/ojfd.2012.23007.
References
[1]   S. Dykas, W. Wróblewski and T. Chmielniak, “Using a CFD/CAA Technique for Aerodynamic Noise Assessment,” Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008, Berlin, 9-13 June 2008, pp. 784-794.

[2]   S. Dykas, W. Wróblewski, S. Rulik and T. Chmielniak, “Numerical Modeling of the Acoustic Waves Propagation,” Archives of Acoustics, Vol. 35, No. 1, 2010, pp. 35-48.

[3]   K. K. Ahuja and J. Mendoza, “Effects of Cavity Dimensions, Boundary Layer, and Temperature on Cavity Noise with Emphasis on Benchmark Data to Validate Computational Aeroacoustic Codes,” 1964.

[4]   S. Weyna, “An Acoustic Energy Dissipation of the Real Sources (in Polish),” 2005.

[5]   W. Wróblewski, S. Dykas and A. Gepert, “Modeling of the Flows with Condensation (in Polish),” 2006.

 
 
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