Numerical investigations of flow and energy fields near a thermoacoustic couple

Ishikawa, Haruko and Mee, David J. (2002) Numerical investigations of flow and energy fields near a thermoacoustic couple. Journal of The Acoustical Society of America, 111 2: 831-839. doi:10.1121/1.1430687

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Author Ishikawa, Haruko
Mee, David J.
Title Numerical investigations of flow and energy fields near a thermoacoustic couple
Journal name Journal of The Acoustical Society of America   Check publisher's open access policy
ISSN 0001-4966
Publication date 2002
Year available 2002
Sub-type Article (original research)
DOI 10.1121/1.1430687
Open Access Status File (Publisher version)
Volume 111
Issue 2
Start page 831
End page 839
Total pages 9
Place of publication Melville, NY, United States
Publisher A I P Publishing LLC
Collection year 2002
Language eng
Subject C1
291801 Fluidization and Fluid Mechanics
780102 Physical sciences
Abstract The flow field and the energy transport near thermoacoustic couples are simulated using a 2D full Navier-Stokes solver. The thermoacoustic couple plate is maintained at a constant temperature; plate lengths, which are short and long compared with the particle displacement lengths of the acoustic standing waves, are tested. Also investigated are the effects of plate spacing and the amplitude of the standing wave. Results are examined in the form of energy vectors, particle paths, and overall entropy generation rates. These show that a net heat-pumping effect appears only near the edges of thermoacoustic couple plates, within about a particle displacement distance from the ends. A heat-pumping effect can be seen even on the shortest plates tested when the plate spacing exceeds the thermal penetration depth. It is observed that energy dissipation near the plate increases quadratically as the plate spacing is reduced. The results also indicate that there may be a larger scale vortical motion outside the plates which disappears as the plate spacing is reduced. (C) 2002 Acoustical Society of America.
Keyword Acoustics
Nonlinear Processes
Simplified Model
Prime Movers
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 36 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 14 Aug 2007, 17:47:49 EST