File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Finite element solution to passive scalar transport behind line sources under neutral and unstable stratification

TitleFinite element solution to passive scalar transport behind line sources under neutral and unstable stratification
Authors
KeywordsDirect numerical simulation (DNS)
Finite element method (FEM)
Fluid turbulence
Open-channel flow
Passive scalar plume
Issue Date2006
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/2861
Citation
International Journal For Numerical Methods In Fluids, 2006, v. 50 n. 5, p. 623-648 How to Cite?
AbstractThis study employed a direct numerical simulation (DNS) technique to contrast the plume behaviours and mixing of passive scalar emitted from line sources (aligned with the spanwise direction) in neutrally and unstably stratified open-channel flows. The DNS model was developed using the Galerkin finite element method (FEM) employing trilinear brick elements with equal-order interpolating polynomials that solved the momentum and continuity equations, together with conservation of energy and mass equations in incompressible flow. The second-order accurate fractional-step method was used to handle the implicit velocity pressure coupling in incompressible flow. It also segregated the solution to the advection and diffusion terms, which were then integrated in time, respectively, by the explicit third-order accurate Runge-Kutta method and the implicit second-order accurate Crank-Nicolson method. The buoyancy term under unstable stratification was integrated in time explicitly by the first-order accurate Euler method. The DNS FEM model calculated the scalar-plume development and the mean plume path. In particular, it calculated the plume meandering in the wall-normal direction under unstable stratification that agreed well with the laboratory and field measurements, as well as previous modelling results available in literature. Copyright © 2005 John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/76134
ISSN
2015 Impact Factor: 1.447
2015 SCImago Journal Rankings: 1.146
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:17:58Z-
dc.date.available2010-09-06T07:17:58Z-
dc.date.issued2006en_HK
dc.identifier.citationInternational Journal For Numerical Methods In Fluids, 2006, v. 50 n. 5, p. 623-648en_HK
dc.identifier.issn0271-2091en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76134-
dc.description.abstractThis study employed a direct numerical simulation (DNS) technique to contrast the plume behaviours and mixing of passive scalar emitted from line sources (aligned with the spanwise direction) in neutrally and unstably stratified open-channel flows. The DNS model was developed using the Galerkin finite element method (FEM) employing trilinear brick elements with equal-order interpolating polynomials that solved the momentum and continuity equations, together with conservation of energy and mass equations in incompressible flow. The second-order accurate fractional-step method was used to handle the implicit velocity pressure coupling in incompressible flow. It also segregated the solution to the advection and diffusion terms, which were then integrated in time, respectively, by the explicit third-order accurate Runge-Kutta method and the implicit second-order accurate Crank-Nicolson method. The buoyancy term under unstable stratification was integrated in time explicitly by the first-order accurate Euler method. The DNS FEM model calculated the scalar-plume development and the mean plume path. In particular, it calculated the plume meandering in the wall-normal direction under unstable stratification that agreed well with the laboratory and field measurements, as well as previous modelling results available in literature. Copyright © 2005 John Wiley & Sons, Ltd.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/2861en_HK
dc.relation.ispartofInternational Journal for Numerical Methods in Fluidsen_HK
dc.rightsInternational Journal for Numerical Methods in Fluids. Copyright © John Wiley & Sons Ltd.en_HK
dc.subjectDirect numerical simulation (DNS)en_HK
dc.subjectFinite element method (FEM)en_HK
dc.subjectFluid turbulenceen_HK
dc.subjectOpen-channel flowen_HK
dc.subjectPassive scalar plumeen_HK
dc.titleFinite element solution to passive scalar transport behind line sources under neutral and unstable stratificationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0271-2091&volume=50&spage=623&epage=648&date=2006&atitle=Finite+element+solution+to+passive+scalar+transport+behind+line+sources+under+neutral+and+unstable+stratificationen_HK
dc.identifier.emailLiu, CH:chliu@hkucc.hku.hken_HK
dc.identifier.emailLeung, DYC:ycleung@hku.hken_HK
dc.identifier.authorityLiu, CH=rp00152en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/fld.1072en_HK
dc.identifier.scopuseid_2-s2.0-31644440247en_HK
dc.identifier.hkuros117349en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-31644440247&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume50en_HK
dc.identifier.issue5en_HK
dc.identifier.spage623en_HK
dc.identifier.epage648en_HK
dc.identifier.isiWOS:000235093900005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, CH=36065161300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats