File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Turbulent lock release gravity current

TitleTurbulent lock release gravity current
Authors
KeywordsEnvironmental hydraulics
Gravity current
Turbulence modeling
Issue Date2001
PublisherScience in China Press. The Journal's web site is located at http://219.238.6.200/journal?code=10
Citation
Science In China, Series E: Technological Sciences, 2001, v. 44 n. 5, p. X-462 How to Cite?
AbstractThe time evolution of a turbulent lock release gravity current, formed by a finite volume of homogeneous fluid released instantaneously into another fluid of slightly lower density was studied by experimental measurements of the density structure via elaborate digital image processing and by a numerical simulation of the flow and mixing using a two-equation turbulence model. The essential fact that the gravity current passes through an initial slumping phase in which the current head advances steadily and a second self-similar phase in which the front velocity decreases like the negative third power of the time after release is satisfactorily presented by the laboratory observation. An overall entrainment ratio proportional to the distance from the release point is found by the numerical simulation. The renormalization group (RNG) k - ε model for Reynolds-stress closure is validated to characterize the gravity current with transitional and localized turbulence.
Persistent Identifierhttp://hdl.handle.net/10722/71555
ISSN
2011 Impact Factor: 1.019
2012 SCImago Journal Rankings: 0.340
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Gen_HK
dc.contributor.authorLee, JHWen_HK
dc.date.accessioned2010-09-06T06:33:03Z-
dc.date.available2010-09-06T06:33:03Z-
dc.date.issued2001en_HK
dc.identifier.citationScience In China, Series E: Technological Sciences, 2001, v. 44 n. 5, p. X-462en_HK
dc.identifier.issn1006-9321en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71555-
dc.description.abstractThe time evolution of a turbulent lock release gravity current, formed by a finite volume of homogeneous fluid released instantaneously into another fluid of slightly lower density was studied by experimental measurements of the density structure via elaborate digital image processing and by a numerical simulation of the flow and mixing using a two-equation turbulence model. The essential fact that the gravity current passes through an initial slumping phase in which the current head advances steadily and a second self-similar phase in which the front velocity decreases like the negative third power of the time after release is satisfactorily presented by the laboratory observation. An overall entrainment ratio proportional to the distance from the release point is found by the numerical simulation. The renormalization group (RNG) k - ε model for Reynolds-stress closure is validated to characterize the gravity current with transitional and localized turbulence.en_HK
dc.languageengen_HK
dc.publisherScience in China Press. The Journal's web site is located at http://219.238.6.200/journal?code=10en_HK
dc.relation.ispartofScience in China, Series E: Technological Sciencesen_HK
dc.subjectEnvironmental hydraulicsen_HK
dc.subjectGravity currenten_HK
dc.subjectTurbulence modelingen_HK
dc.titleTurbulent lock release gravity currenten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8237&volume=44&issue=5&spage=449&epage=462&date=2001&atitle=Turbulent+lock+release+gravity+currenten_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-s2.0-0346454411en_HK
dc.identifier.hkuros74135en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0346454411&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue5en_HK
dc.identifier.spageXen_HK
dc.identifier.epage462en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridChen, G=7406541589en_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats