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Article: Turbulent line momentum puffs

TitleTurbulent line momentum puffs
Authors
Issue Date1996
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/em.html
Citation
Journal Of Engineering Mechanics, 1996, v. 122 n. 1, p. 19-29 How to Cite?
AbstractThe time evolution of a line puff - a turbulent element with momentum - is studied by numerical simulation of the flow and mixing using a two-equation turbulence model, and by experimental measurements of the scalar concentration field in an advected line puff. The numerical solution reveals a distinct double-vortex flow with a loss of initial impulse due to pressure interaction, and mixing at the front of the puff. The added mass coefficient associated with the loss of impulse is found to be approximately 1. The computed flow and puff characteristics support the concept of self-similarity beyond a dimensionless time of 25-30. The predicted puff flow features and mixing rates are well-supported by experimental observations.
Persistent Identifierhttp://hdl.handle.net/10722/70536
ISSN
2015 Impact Factor: 1.346
2015 SCImago Journal Rankings: 0.747
References

 

DC FieldValueLanguage
dc.contributor.authorLee, JHWen_HK
dc.contributor.authorRodi, Wen_HK
dc.contributor.authorWong, CFen_HK
dc.date.accessioned2010-09-06T06:23:51Z-
dc.date.available2010-09-06T06:23:51Z-
dc.date.issued1996en_HK
dc.identifier.citationJournal Of Engineering Mechanics, 1996, v. 122 n. 1, p. 19-29en_HK
dc.identifier.issn0733-9399en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70536-
dc.description.abstractThe time evolution of a line puff - a turbulent element with momentum - is studied by numerical simulation of the flow and mixing using a two-equation turbulence model, and by experimental measurements of the scalar concentration field in an advected line puff. The numerical solution reveals a distinct double-vortex flow with a loss of initial impulse due to pressure interaction, and mixing at the front of the puff. The added mass coefficient associated with the loss of impulse is found to be approximately 1. The computed flow and puff characteristics support the concept of self-similarity beyond a dimensionless time of 25-30. The predicted puff flow features and mixing rates are well-supported by experimental observations.en_HK
dc.languageengen_HK
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/em.htmlen_HK
dc.relation.ispartofJournal of Engineering Mechanicsen_HK
dc.rightsJournal of Engineering Mechanics. Copyright © American Society of Civil Engineers.en_HK
dc.titleTurbulent line momentum puffsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0733-9399&volume=122&spage=19&epage=29&date=1996&atitle=Turbulent+line+momentum+puffsen_HK
dc.identifier.emailLee, JHW: hreclhw@hku.hken_HK
dc.identifier.authorityLee, JHW=rp00061en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0030322022en_HK
dc.identifier.hkuros9519en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030322022&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume122en_HK
dc.identifier.issue1en_HK
dc.identifier.spage19en_HK
dc.identifier.epage29en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK
dc.identifier.scopusauthoridRodi, W=7101876618en_HK
dc.identifier.scopusauthoridWong, CF=36862864200en_HK

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