The University of Southampton
University of Southampton Institutional Repository

Acoustic transmission in non-uniform ducts with mean flow, part II: The finite element method

Astley, R.J. and Eversman, W. (1981) Acoustic transmission in non-uniform ducts with mean flow, part II: The finite element method Journal of Sound and Vibration, 74, (1), pp. 103-121. (doi:10.1016/0022-460X(81)90495-8).

Record type: Article

Abstract

This second paper in a two part series describes the implementation of the finite element method for the solution of the problem of acoustic transmission through a non-uniform duct carrying a high speed subsonic compressible flow. A finite element scheme based on both the Galerkin method and the residual least squares method and with eight noded isoparametric elements is described. Multi-modal propagation is investigated by coupling of the solution in the duct non-uniform section to modal expansions in uniform sections. The accuracy of the finite element results for both the eigenvalue and transmission problems is assessed by comparison with exact solutions and with results from the method of weighted residuals in the form of a modified Galerkin method as introduced in Part I of this pair of papers. The results of calculations show that modal interactions, particularly in transmitted modes, become increasingly important with increasing duct flow Mach number. Power transmission coefficient calculations for the geometries studied reveal no indication of a linear basis for the phenomenon of subsonic acoustic choking.

Full text not available from this repository.

More information

Published date: 8 January 1981

Identifiers

Local EPrints ID: 166449
URI: http://eprints.soton.ac.uk/id/eprint/166449
ISSN: 0022-460X
PURE UUID: ce32c776-d738-48dd-995d-e7ee6c9a55d9

Catalogue record

Date deposited: 29 Oct 2010 10:22
Last modified: 18 Jul 2017 12:25

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×