Volume 7, January 2008
M. Zhu, A. Tabbal, M. Megahed, G. Pierrot and P. Ravier
ESI Group, Rungis, France
Keywords: Aero-Acoustics, Fluid Induced Noise Source, Weak Compressibility, Low Mach Flow, Air-Borne Acoustic Wave Propagation and Sound Pressure Level (SPL)
This paper presents the implementation and validation of a numerical simulation method that takes into account the air-borne acoustic wave propagation within the turbulent flow solution at low Mach numbers. The method is called weak compressibility, and is used in order to cope with fully coupled aero-acoustics problem in a nonlinear system. The weak compressibility was implemented into an explicit incompressible flow solver using an edgebased finite element method.
A single 3D cavity case was used to validate the method in comparison with the experiment. The simulated results showed good agreement with the experimental data with regards to the acoustic pressure and frequency for the dominant peak of the sound pressure level (SPL) spectra over a wide speed range from 15 to 55 meters per second.
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 PAM-FLOW Theory Manual, ESI Group, 2002-2005.
 H. Luo, J.D. Baum and R. Löhner, Edge-Based Finite Element Scheme for the Euler Equations; AIAA J.32, 6, 1183-1190, 1994.
 R. Ramamurti and R. Löhner, A Parallel Implicit Incompressible Flow Solver Using Unstructured Meshes; Computers and Fluids 5, 119-132, 1996.
M. Zhu, A. Tabbal, M. Megahed, G. Pierrot, P. Ravier, A Weak Compressible Flow Solution for Fluid and Air-Borne Acoustics Coupled Problems in a Nonlinear System, NAFEMS International Journal of CFD Case Studies, Volume 7, 2008, Pages 47-56, https://doi.org/10.59972/pt108tyk
|Authors||Zhu. M Tabbal. A Megahed. M Pierrot. G Ravier. P|
|Date||8th January 2008|
|Order Ref||CFDJ7-4 Download|
|Non-member Price||£5.00 | $6.32 | €5.82|