✦ LIBER ✦

Ducts with axial temperature gradients: An approximate solution for sound transmission and generation

✍ Scribed by A. Cummings

Book ID: 104153989
Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 748 KB
Volume: 51
Category: Article
ISSN: 0022-460X
DOI: 10.1016/s0022-460x(77)80112-0

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✦ Synopsis

This paper is concerned with rigid-walled ducts in which axial temperature gradients exist. An acoustic wave equation is derived (an independently specified source distribution is assumed to be present) and its solution is discussed. It is shown that an approximate analytical solution, valid at sufficiently high frequencies, may be obtained for the fundamental mode of propagation, and that this has certain advantages over a purely numerical solution. Experimental results on sound transmission and generation are compared to numerical, and approximate analytical, theoretical results and the agreement is shown to be good.

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