Electronic Journal Technical Acoustics ISSN 1819-2408

Konstantin I. Matveev

Thermoacoustic effects of transverse non-uniformity of mean temperature in channels without mass streaming

language: English

received 16.03.2008, published 16.04.2008

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ABSTRACT

Small thermoacoustic devices can fulfill a need for high-performance compact energy conversion systems. One of the miniaturization consequences is the appearance of strong transverse temperature gradients in the stacks of thermoacoustic engines. The thermoacoustic theory is extended in this paper to include a transverse gradient of the mean temperature field. The influence of this gradient on the acoustic velocity and temperature fluctuation amplitudes and on the flow of thermoacoustic enthalpy and acoustic energy is demonstrated under the standing-wave conditions and in the absence of mass streaming.

7 pages, 4 figures

Сitation: Konstantin I. Matveev. Thermoacoustic effects of transverse non-uniformity of mean temperature in channels without mass streaming. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2008, 6.

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Konstantin Matveev received his MS degree in Applied Physics at MIPT and PhD degree in Mechanical Engineering at Caltech. As a postdoctoral associate, he worked at Los Alamos National Laboratory. Currently, he is an assistant professor at Washington State University. His research interests include thermoacoustics, advanced energy systems, acoustics of porous media, and aero-hydrodynamics of fast ships. e-mail: matveev@hydrofoils.org