| An aeroacoustically driven thermoacoustic heat pump. | |
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MedLine Citation:
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PMID: 16018466 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The mean flow of gas in a pipe past a cavity can excite the resonant acoustic modes of the cavity--much like blowing across the top of a bottle. The periodic shedding of vortices from the leading edge of the mouth of the cavity feeds energy into the acoustic modes which, in turn, affect the shedding of the next vortex. This so-called aeroacoustic whistle can excite very high amplitude acoustic standing waves within a cavity defined by coaxial side branches closed at their ends. The amplitude of these standing waves can easily be 20% of the ambient pressure at optimal gas flow rates and ambient pressures within the main pipe. A standing wave thermoacoustic heat pump is a device which utilizes the in-phase pressure and displacement oscillations to pump heat across a porous medium thereby establishing, or maintaining, a temperature gradient. Experimental results of a combined system of aeroacoustic sound source and a simple thermoacoustic stack will be presented. |
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Authors:
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W V Slaton; J C H Zeegers |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 117 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-07-15 Completed Date: 2005-12-14 Revised Date: 2006-12-27 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 3628-35 Citation Subset: - |
Affiliation:
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Department of Physics and Astronomy, The University of Central Arkansas, 201 Donaghey Avenue, Conway, Arkansas 72035-0001, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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