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TRANSMISSION OF SOUND IN UNIFORM PIPES CARRYING HOT GAS FLOWS

โœ Scribed by E. Dokumaci

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
485 KB
Volume
195
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

A common element in an engine exhaust system is a pipe carrying mean flow in the presence of a temperature gradient. The transmission of plane harmonic sound waves in such a pipe is considered by several authors. In this paper a general matrizant formulation and two approximate analytical solutions, both valid for any form of temperature distribution, are presented for the first time. The approximation underlying one of the analytical solutions is justified by the matrizant analysis. A scattering matrix is derived for the case of linear temperature gradient and compared with the corresponding matrizant.

๐Ÿ“œ SIMILAR VOLUMES

ON TRANSMISSION OF SOUND IN A NON-UNIFOR
ON TRANSMISSION OF SOUND IN A NON-UNIFORM DUCT CARRYING A SUBSONIC COMPRESSIBLE FLOW
โœ E. Dokumaci ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 218 KB

The differential equations governing the transmission of one-dimensional sound waves in a non-uniform duct carrying a subsonic compressible mean flow have been the subject of a recent debate [1,2]. Of the two formulations presented, one is considered to be non-acoustical and the other as neglecting

ON TRANSMISSION OF SOUND IN CIRCULAR AND
ON TRANSMISSION OF SOUND IN CIRCULAR AND RECTANGULAR NARROW PIPES WITH SUPERIMPOSED MEAN FLOW
โœ E. Dokumaci ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 212 KB

The problem of transmission of sound in a narrow pipe carrying a mean flow has been dealt with in recent papers by solving the convected acoustic equations simplified in the manner of the Zwikker and Kosten theory. A significant difference between these studies appertains to the form of the axial me

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A method of weighted residuals for the investigation of sound transmission in non-uniform ducts without flow
โœ W. Eversman; E.L. Cook; R.J. Beckemeyer ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 970 KB

The transmission of sound in a non-uniform two dimensional duct without flow is investigated by a method of weighted residuals which leads to a set of coupled "generalized telegraphists \* equations". Results for several duct configurations are compared with those from, respectively, a variational m