Wave Envelope Elements for Acoustical Radiation in Inhomogeneous Media

Author

R. Jeremy Astley
Walter Eversman, Missouri University of Science and TechnologyFollow

Abstract

This paper reviews applications of the wave envelope, finite element method to linear acoustical wave propagation. A detailed formulation is given for the particular case of acoustical radiation from a sound source embedded in a region of significant temperature variation. Results are presented for the case of sound propagating along a heated pipe and radiating from an unflanged exhaust. Measured and computed transmission losses are shown to be in close agreement. Although the formulation is presented in the context of acoustical propagation it applies equally well to other wave propagation problems which involve the solution of inhomogeneous, Helmholtz type equations. The analysis presented in this paper and all applications to date are for the axisymmetric case. © 1988.

Recommended Citation

R. J. Astley and W. Eversman, "Wave Envelope Elements for Acoustical Radiation in Inhomogeneous Media," Computers and Structures, Elsevier, Jan 1988.

The definitive version is available at https://doi.org/10.1016/0045-7949(88)90108-3

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0045-7949

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 Elsevier, All rights reserved.

Publication Date

01 Jan 1988