| Optimization of baffle configurations to prevent aeroacoustic instabilities in heat exchangers: Preliminary experiments. | |
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MedLine Citation:
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PMID: 18190010 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Gas heat exchangers are prone to aeroacoustic instabilities, which often lead to severe noise levels, structural vibrations, and fatigue. Actually, this problem is solved by placing rigid baffles inside the container, which modify the acoustic modal fields and eventually inhibit the instability. For realistic industrial components using a restricted number of acoustical baffles, their optimal location is a challenging problem, as trial and error experimentation is often a costly and frustrating procedure. Recently, some strategies were proposed for the optimal location of a single baffle in a typical re-heater from a power station boiler, based on simulated annealing as well as genetic algorithm approaches. In this paper and using the above-mentioned optimization strategies, a more complex case of the problem-the optimal location of a given number (two or more) of baffles in a typical re-heater, was addressed. Some preliminary experiments were performed and compared with the simulation results. From the discussion, improvements in the developed optimization functional were proposed. [This work has been endorsed by the Portuguese FCT and POCI 2010, with funding participation through the EC programme FEDER (Project No. POCI/EME/5728/2004).]. |
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Authors:
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A Miguel Moreira; Jose Antunes; Vincent Debut; Martins Paulino; Heitor Pina |
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: 122 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2008-01-14 Completed Date: - Revised Date: - |
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: 3053 Citation Subset: IM |
Affiliation:
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College of Technol., Setubal Polytechnic Inst., Campus do Instituto Politcnico de Setubal, Estefanilha 2910-76, PortugalInst. of Nuclear Technol., PortugalTech. Inst., 1049-001 Lisboa, Portugal. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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