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RESEARCH PAPERS: Noise Control and Acoustics

Prediction of Acoustical Behavior in Cavities Using an Indirect Boundary Element Method

[+] Author and Article Information
C. R. Kipp

AT&T Bell Laboratories, Whippany, NJ 07981

R. J. Bernhard

Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Vib., Acoust., Stress, and Reliab 109(1), 22-28 (Jan 01, 1987) (7 pages) doi:10.1115/1.3269390 History: Received August 01, 1986; Online November 23, 2009

Abstract

An indirect boundary element method is developed to predict sound fields in acoustical cavities. An isoparametric quadratic boundary element is utilized. The formulations of pressure, velocity and/or impedance boundary conditions are developed and incorporated into the method. The capability to include acoustic point sources within the cavity is also implemented. The method is applied to the prediction of sound fields in spherical and rectangular cavities. All three boundary condition types are verified. Cases having a point source within the cavity domain are also studied. Numerically determined cavity pressure distributions and responses are presented. The numerical results correlate well with available analytical results.

Copyright © 1987 by ASME
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