A direct boundary element method for acoustic radiation and scattering from mixed regular and thin bodies

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

In this paper, the direct boundary element method is applied to acoustic radiation and scattering from mixed regular and thin bodies. A typical application problem involves a regular body with thin fins either attached to or in the neighborhood of the body. It is shown that the mixed-body integral formulation requires interactions between the conventional Helmholtz integral equation and the hypersingular thin-body integral equation. If at least one regular body is involved in a mixed-body environment, the direct integral formulation possesses the well-known nonuniqueness difficulty. This nonuniqueness difficulty is overcome by either the CHIEF method or the Burton and Miller method. Since both the thin-body integral equation and the Burton and Miller equation contain a hypersingular integral, a regularized form recently derived by Krishnasamy et al. [ASME J. Appl. Mech. 57, 404-414 (1990)] is adopted in this paper. Numerical results show excellent agreement with a multidomain boundary element solution and a point-source solution.

Original languageEnglish
Pages (from-to)84-91
Number of pages8
JournalJournal of the Acoustical Society of America
Volume97
Issue number1
DOIs
StatePublished - Jan 1995

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Fingerprint

Dive into the research topics of 'A direct boundary element method for acoustic radiation and scattering from mixed regular and thin bodies'. Together they form a unique fingerprint.

Cite this