A New Look at the High Frequency Boundary Element and Rayleigh Integral Approximations 2003-01-1451
This paper revisits the popular Rayleigh integral approximation, and also considers a second approximation, the high frequency boundary element method which is similar to the Rayleigh integral. Both methods are approximations to the boundary integral equation, and can solve problems in a fraction of the time required by the conventional boundary element method. The development of both methods from the Helmholtz integral equation is demonstrated and the differences between the two methods are delineated. Both methods were compared on practical examples including a running engine, gearbox, and construction cab. It was concluded that both methods can reliably predict the sound power for many problems but are inaccurate for sound pressure computations.
Citation: Herrin, D., Martinus, F., Wu, T., and Seybert, A., "A New Look at the High Frequency Boundary Element and Rayleigh Integral Approximations," SAE Technical Paper 2003-01-1451, 2003, https://doi.org/10.4271/2003-01-1451. Download Citation
Author(s):
D. W. Herrin, F. Martinus, T. W. Wu, A. F. Seybert
Affiliated:
University of Kentucky
Pages: 9
Event:
SAE 2003 Noise & Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Pressure
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