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Prediction of sound fields in acoustical cavities using the boundary element methodA method was developed to predict sound fields in acoustical cavities. The method is based on the indirect boundary element method. An isoparametric quadratic boundary element is incorporated. Pressure, velocity and/or impedance boundary conditions may be applied to a cavity by using this method. The capability to include acoustic point sources within the cavity is implemented. The method is applied to the prediction of sound fields in spherical and rectangular cavities. All three boundary condition types are verified. Cases with 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.
Document ID
19860003589
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Kipp, C. R. (Purdue Univ. West Lafayette, IN, United States)
Bernhard, R. J. (Purdue Univ. West Lafayette, IN, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1985
Subject Category
Acoustics
Report/Patent Number
HL-85-26
NASA-CR-176295
NAS 1.26:176295
Accession Number
86N13057
Funding Number(s)
CONTRACT_GRANT: NAG1-58
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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