On the interaction of sound with steady heat communicating flows

Karimi, N. , Brear, M.J. and Moase, W.H. (2010) On the interaction of sound with steady heat communicating flows. Journal of Sound and Vibration, 329(22), pp. 4705-4718. (doi:10.1016/j.jsv.2010.05.009)

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Abstract

This paper presents a theoretical and numerical investigation of the interaction between sound waves and non-diffusive, quasi-one-dimensional, subsonic flows with only steady heat communication. It is first shown that a steady heat communicating flow can attenuate or generate sound even in the absence of mean flow acceleration. The relative significance of sound generation by the heat addition induced acceleration of density or entropy inhomogeneities and the effect of steady heat communication on the incident acoustic wave is then found. It is shown through scaling arguments that at high frequencies mean flow acceleration effects are negligible and the only significant sound generating mechanism involves steady heat communication. At low frequencies, however, the two mechanisms are more comparable.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Karimi, Dr Nader
Authors: Karimi, N., Brear, M.J., and Moase, W.H.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Journal of Sound and Vibration
Publisher:Elsevier - Science Direct
ISSN:0022-460X
ISSN (Online):1095-8568

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