The Cooling Module Aerodynamic Noise Prediction Considering Porous Media

Abstract:

The influence of the radiator and other components in the noise prediction process of cooling module is difficult to calculate. Firstly, the model including porous media is established. And the large eddy simulation (LES) is used to analyze its impact on the inflow instability and calculate the urbulent kinetic energy and vorticity around the fan. Then the main noise sources are identified by vortex sound theory. The acoustic BEM model is established for discrete and broadband aerodynamic noise prediction of cooling module. And the sound field sound pressure spectrum is analyzed. Finally, the noise test is made to verify the prediction. The results show that the radiator and other components have a huge influence in the flow field and noise prediction and they can not be ignored in the aerodynamic noise calculation process.

• Periodical: Applied Mechanics and Materials (Volume 711)
• Pages: 20-26
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.711.20
• Online since: December 2014
• Authors: Peng Fei Zhang*, Mao Tao Zhu, Zhi Jun Li, Kuan Wang
• Keywords: Aerodynamic Noise, BEM, Cooling Module, Large Eddy Simulation, Porous Media

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