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Article: A numerical study on the structure and dynamics of turbulence in oscillatory bottom layer flow over a flat or rippled bed

TitleA numerical study on the structure and dynamics of turbulence in oscillatory bottom layer flow over a flat or rippled bed
Authors
Bai, YCNg, COHuang, T
KeywordsAnisotropic turbulence model
Oscillatory boundary layer flow
Sand ripples
Issue Date2006
PublisherChina Ocean Press
Citation
China Ocean Engineering, 2006, v. 20 n. 1, p. 45-60 How to Cite?
DOI: http://dx.doi.org/10.3321/j.issn:0890-5487.2006.01.004
AbstractThis paper is mainly concerned with the turbulence in oscillatory bottom boundary layers over flat or rippled seabeds. Owing to the strong shear and anisotropy of oscillatory flow, an anisotropic turbulence mathematical model is set up using the finite difference method, and the computational results of the model are verified by comparisons with well-known experiments. Turbulent energy, dissipation and Reynolds stress can all be computed with this mathematical model, and the development processes of a large coherent vortex structure over a rippled bed, such as main flow separation, coherent vortex formation and curling, coherent vortex ejection and breaking up, are successfully simulated.
Persistent Identifierhttp://hdl.handle.net/10722/75941
ISSN
0890-5487
2021 Impact Factor: 1.253
2020 SCImago Journal Rankings: 0.404

 

DC FieldValueLanguage
dc.contributor.authorBai, YCen_HK
dc.contributor.authorNg, COen_HK
dc.contributor.authorHuang, Ten_HK
dc.date.accessioned2010-09-06T07:16:03Z-
dc.date.available2010-09-06T07:16:03Z-
dc.date.issued2006en_HK
dc.identifier.citationChina Ocean Engineering, 2006, v. 20 n. 1, p. 45-60en_HK
dc.identifier.issn0890-5487en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75941-
dc.description.abstractThis paper is mainly concerned with the turbulence in oscillatory bottom boundary layers over flat or rippled seabeds. Owing to the strong shear and anisotropy of oscillatory flow, an anisotropic turbulence mathematical model is set up using the finite difference method, and the computational results of the model are verified by comparisons with well-known experiments. Turbulent energy, dissipation and Reynolds stress can all be computed with this mathematical model, and the development processes of a large coherent vortex structure over a rippled bed, such as main flow separation, coherent vortex formation and curling, coherent vortex ejection and breaking up, are successfully simulated.en_HK
dc.languageengen_HK
dc.publisherChina Ocean Pressen_HK
dc.relation.ispartofChina Ocean Engineeringen_HK
dc.subjectAnisotropic turbulence modelen_HK
dc.subjectOscillatory boundary layer flowen_HK
dc.subjectSand ripplesen_HK
dc.titleA numerical study on the structure and dynamics of turbulence in oscillatory bottom layer flow over a flat or rippled beden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0890-5487&volume=20&issue=1&spage=45&epage=60&date=2006&atitle=A+numerical+study+on+the+structure+and+dynamics+of+turbulence+in+oscillatory+bottom+layer+flow+over+a+flat+or+rippled+beden_HK
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.3321/j.issn:0890-5487.2006.01.004-
dc.identifier.scopuseid_2-s2.0-33747511400en_HK
dc.identifier.hkuros115294en_HK
dc.identifier.volume20en_HK
dc.identifier.issue1en_HK
dc.identifier.spage45en_HK
dc.identifier.epage60en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridBai, YC=7402572067en_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridHuang, T=36484742200en_HK
dc.identifier.issnl0890-5487-

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