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Application of Inverse Boundary Element Method for Far Field Sound Pressure Prediction of a Diesel Engine
ISSN: 1946-391X, e-ISSN: 1946-3928
Published October 05, 2010 by SAE International in United States
Citation: Tao, Z. and Ren, Y., "Application of Inverse Boundary Element Method for Far Field Sound Pressure Prediction of a Diesel Engine," SAE Int. J. Commer. Veh. 3(1):216-220, 2010, https://doi.org/10.4271/2010-01-1984.
This paper presents an approach to predict the far field sound pressure for a diesel engine using the inverse boundary element method. In this approach, near field sound pressure is measured first. The particle velocity is then reconstructed to a virtual plane instead of the actual vibrating surfaces and the far field sound pressure can be predicted using the reconstructed particle velocity of the virtual plane. Two sets of inverse sound pressure are employed to validate the approach. One is from the finite element and boundary element methods. The other is from the sound pressure measurement of a diesel engine in a hemi-anechoic chamber. Good correlations between the predicted and the measured sound pressure demonstrate that the method can be used to accurately predict the far field sound pressure.