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Article: 3D numerical modeling of non-isotropic turbulent buoyant helicoidal flow and heat transfer in a curved open channel

Title3D numerical modeling of non-isotropic turbulent buoyant helicoidal flow and heat transfer in a curved open channel
Authors
Keywords3D numerical modeling
Buoyancy
Curved open channel
Non-isotropic turbulent flow
Stratification
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmt
Citation
International Journal Of Heat And Mass Transfer, 2003, v. 46 n. 11, p. 2087-2093 How to Cite?
AbstractA 3D non-isotropic algebraic stress/flux turbulence model is employed to simulate turbulent buoyant helicoidal flow and heat transfer in a rectangular curved open channel. The prediction shows that, unlike the isothermal flow, there are two major and one minor secondary flow eddies in a cross section of thermally stratified turbulent buoyant helicoidal flow in a curved open channel. The results compare favorably with available experimental data. The thermocline in a curved channel is thicker than that in a straight channel. All of these is the result of complex interaction between the buoyant force, the centrifugal force and the Reynolds stresses. The turbulent flow in a curved channel is obviously non-isotropic: The turbulence fluctuations in vertical and radial directions are lower in magnitude than that in the axial direction, which illustrates the suppression of turbulence due to buoyant and centrifugal forces. The results are of significant practical value to engineering works such as the choice of sites for intake and pollutant-discharge structures in a curved river. © 2003 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/76184
ISSN
2014 Impact Factor: 2.383
2014 SCImago Journal Rankings: 1.554
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShen, YMen_HK
dc.contributor.authorNg, COen_HK
dc.contributor.authorNi, HQen_HK
dc.date.accessioned2010-09-06T07:18:27Z-
dc.date.available2010-09-06T07:18:27Z-
dc.date.issued2003en_HK
dc.identifier.citationInternational Journal Of Heat And Mass Transfer, 2003, v. 46 n. 11, p. 2087-2093en_HK
dc.identifier.issn0017-9310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76184-
dc.description.abstractA 3D non-isotropic algebraic stress/flux turbulence model is employed to simulate turbulent buoyant helicoidal flow and heat transfer in a rectangular curved open channel. The prediction shows that, unlike the isothermal flow, there are two major and one minor secondary flow eddies in a cross section of thermally stratified turbulent buoyant helicoidal flow in a curved open channel. The results compare favorably with available experimental data. The thermocline in a curved channel is thicker than that in a straight channel. All of these is the result of complex interaction between the buoyant force, the centrifugal force and the Reynolds stresses. The turbulent flow in a curved channel is obviously non-isotropic: The turbulence fluctuations in vertical and radial directions are lower in magnitude than that in the axial direction, which illustrates the suppression of turbulence due to buoyant and centrifugal forces. The results are of significant practical value to engineering works such as the choice of sites for intake and pollutant-discharge structures in a curved river. © 2003 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmten_HK
dc.relation.ispartofInternational Journal of Heat and Mass Transferen_HK
dc.subject3D numerical modelingen_HK
dc.subjectBuoyancyen_HK
dc.subjectCurved open channelen_HK
dc.subjectNon-isotropic turbulent flowen_HK
dc.subjectStratificationen_HK
dc.title3D numerical modeling of non-isotropic turbulent buoyant helicoidal flow and heat transfer in a curved open channelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0017-9310&volume=46&issue=11&spage=2087&epage=2093&date=2003&atitle=3D+numerical+modeling+of+non-isotropic+turbulent+buoyant+helicoidal+flow+and+heat+transfer+in+a+curved+open+channelen_HK
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0017-9310(02)00501-Xen_HK
dc.identifier.scopuseid_2-s2.0-0037401256en_HK
dc.identifier.hkuros78470en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037401256&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2087en_HK
dc.identifier.epage2093en_HK
dc.identifier.isiWOS:000182035600010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridShen, YM=7404767062en_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridNi, HQ=7102619140en_HK

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