A method for computing acoustic fields based on the principle of wave superposition

Gary H. Koopmann, Limin Song, John Brian Fahnline

Research output: Contribution to journalArticle

409 Scopus citations

Abstract

A method for computing the acoustic fields of arbitrarily shaped radiators is described that uses the principle of wave superposition. The superposition integral, which is shown to be equivalent to the Helmholtz integral, is based on the idea that the combined fields of an array of sources interior to a radiator can be made to reproduce a velocity prescribed on the surface of the radiator. The strengths of the sources that produce this condition can, in turn, be used to compute the corresponding surface pressures. The results of several numerical experiments are presented that demonstrate the simplicity of the method. Also, the advantages that the superposition method has over the more commonly used boundary-element methods are discussed. These include simplicity of generating the matrix elements used in the numerical formulation and improved accuracy and speed, the latter two being due to the avoidance of uniqueness and singularity problems inherent in the boundary-element formulation.

Original languageEnglish (US)
Pages (from-to)2433-2438
Number of pages6
JournalJournal of the Acoustical Society of America
Volume86
Issue number6
DOIs
StatePublished - Jan 1 1989

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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