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dc.contributor.authorZhang, Y.
dc.contributor.authorRubinato, M.
dc.contributor.authorKazemi, E.
dc.contributor.authorPu, Jaan H.
dc.contributor.authorHuang, Y.
dc.contributor.authorLin, P.
dc.date.accessioned2019-06-26T11:45:28Z
dc.date.available2019-06-26T11:45:28Z
dc.date.issued2019
dc.identifier.citationZhang Y, Rubinato M, Kazemi E (2019) Numerical and experimental analysis of shallow turbulent flow over complex roughness beds. International Journal of Computational Fluid Dynamics. Accepted for Publication.en_US
dc.identifier.urihttp://hdl.handle.net/10454/17144
dc.descriptionYesen_US
dc.description.abstractA set of shallow-water equations (SWEs) based on a k-epsilon Reynold stress model is established to simulate the turbulent flows over a complex roughness bed. The fundamental equations are discretized by the second-order finite-difference method (FDM), in which spatial and temporal discretization are conducted by staggered-grid and leap-frog schemes, respectively. The turbulent model in this study stems from the standard k-epsilon model, but is enhanced by replacing the conventional vertical production with a more rigorous and precise generation derived from the energy spectrum and turbulence scales. To verify its effectiveness, the model is applied to compute the turbulence in complex flow surroundings (including a rough bed) in an abrupt bend and in a natural waterway. The comparison of the model results against experimental data and other numerical results shows the robustness and accuracy of the present model in describing hydrodynamic characteristics, especially turbulence features on the complex roughness bottom.en_US
dc.description.sponsorshipNational Key Research and Development Program of China (Grant No: 2016YFE0122500, 2013CB036401 and 2013CB036402), China Postdoctoral Science Foundation (Grant No: 2016M591184) and Programme of Introducing Talents of Discipline to Universities (Grant No: BC2018038)en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1080/10618562.2019.1643845
dc.rights© 2019 Taylor & Francis. This is an Author's Original Manuscript of an article published by Taylor & Francis in International Journal of Computational Fluid Dynamics on 24 July 2019 available online at https://doi.org/10.1080/10618562.2019.1643845
dc.subjectEnergy spectrumen_US
dc.subjectRoughness beden_US
dc.subjectSWE modelen_US
dc.subjectShallow flowsen_US
dc.subjectTurbulent flowsen_US
dc.titleNumerical and experimental analysis of shallow turbulent flow over complex roughness bedsen_US
dc.status.refereedYesen_US
dc.date.Accepted2019-06-11
dc.date.application2019-07-24
dc.typeArticleen_US
dc.date.EndofEmbargo2020-07-25
dc.type.versionAccepted manuscripten_US
dc.description.publicnotesThe full-text of this article will be released for public view at the end of the publisher embargo on 25 Jul 2020.en_US
refterms.dateFOA2019-06-26T11:46:08Z


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