DC FieldValueLanguage
dc.contributor.authorJin, Yan-
dc.contributor.authorHerwig, Heinz-
dc.date.accessioned2020-06-03T12:15:40Z-
dc.date.available2020-06-03T12:15:40Z-
dc.date.issued2015-11-20-
dc.identifier.issn0045-7930de_DE
dc.identifier.urihttp://hdl.handle.net/11420/6226-
dc.description.abstractTwo kinds of a generic roughness on plane channel walls have been investigated by standard RANS turbulence models. The objective was to accurately predict mean flow quantities for steady incompressible flows through rough wall channels. Seven turbulence models have been used in a special validation procedure based on direct numerical simulation (DNS) results for several values of the roughness spacing and the Reynolds number (which here are the free parameters). In addition to single RANS solutions also a parameter expansion method (PEM) is examined with respect to its capability to accurately predict rough wall channel flows for an extended range of parameters, i.e. for various roughness heights and Reynolds numbers. Those methods that could be validated were then used to predict results for parameters beyond the validation range. Their accuracy can be assessed by comparison with reasonably extended DNS results. The final conclusion is that RANS solutions only with certain turbulence models and over some parameter ranges can be used to predict turbulent channel flows influenced by wall roughness.en
dc.language.isoende_DE
dc.publisherElsevier Sciencede_DE
dc.relation.ispartofComputers & fluidsde_DE
dc.subjectDNSde_DE
dc.subjectPEMde_DE
dc.subjectRANSde_DE
dc.subjectRough wallde_DE
dc.subjectTurbulent flowde_DE
dc.subject.ddc530: Physikde_DE
dc.subject.ddc600: Technikde_DE
dc.subject.ddc620: Ingenieurwissenschaftende_DE
dc.titleTurbulent flow in rough wall channels : validation of RANS modelsde_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishTwo kinds of a generic roughness on plane channel walls have been investigated by standard RANS turbulence models. The objective was to accurately predict mean flow quantities for steady incompressible flows through rough wall channels. Seven turbulence models have been used in a special validation procedure based on direct numerical simulation (DNS) results for several values of the roughness spacing and the Reynolds number (which here are the free parameters). In addition to single RANS solutions also a parameter expansion method (PEM) is examined with respect to its capability to accurately predict rough wall channel flows for an extended range of parameters, i.e. for various roughness heights and Reynolds numbers. Those methods that could be validated were then used to predict results for parameters beyond the validation range. Their accuracy can be assessed by comparison with reasonably extended DNS results. The final conclusion is that RANS solutions only with certain turbulence models and over some parameter ranges can be used to predict turbulent channel flows influenced by wall roughness.de_DE
tuhh.publisher.doi10.1016/j.compfluid.2015.08.005-
tuhh.publication.instituteTechnische Thermodynamik M-21de_DE
tuhh.publication.instituteThermofluiddynamik (M-21H)de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume122de_DE
tuhh.container.startpage34de_DE
tuhh.container.endpage46de_DE
local.status.inpressfalsede_DE
item.creatorGNDJin, Yan-
item.creatorGNDHerwig, Heinz-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.grantfulltextnone-
item.languageiso639-1en-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.creatorOrcidJin, Yan-
item.creatorOrcidHerwig, Heinz-
item.fulltextNo Fulltext-
crisitem.author.deptTechnische Thermodynamik M-21-
crisitem.author.deptTechnische Thermodynamik M-21-
crisitem.author.orcid0000-0002-2297-6827-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
Appears in Collections:Publications without fulltext
Show simple item record

Page view(s)

15
Last Week
2
Last month
0
checked on Aug 11, 2020

Google ScholarTM

Check

Add Files to Item

Note about this record

Export

Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.