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dc.contributor.authorPu, Jaan H.
dc.contributor.authorShao, Songdong
dc.contributor.authorHuang, Y.
dc.contributor.authorHussain, Khalid
dc.date.accessioned2016-10-07T14:38:05Z
dc.date.available2016-10-07T14:38:05Z
dc.date.issued2013
dc.identifier.citationPu JH, Shao S, Huang Y et al (2013) Evaluations of SWEs and SPH numerical modelling techniques for dam break flows. Engineering Applications of Computational Fluid Mechanics. 7(4): 544-563.
dc.identifier.urihttp://hdl.handle.net/10454/9716
dc.descriptionNo
dc.description.abstractThe standard shallow water equations (SWEs) model is often considered to provide weak solutions to the dam-break flows due to its depth-averaged shock-capturing scheme assumptions. In this study, an improved SWEs model using a recently proposed Surface Gradient Upwind Method (SGUM) is used to compute dam-break flows in the presence of a triangular hump. The SGUM allows the SWEs model to stably and accurately reproduce the highly complex shock currents caused by the dam-break event, as it improves the treatment of SWEs numerical source terms, which is particularly crucial for simulating the wet/dry front interface of the dam-break flow. Besides, an Incompressible Smoothed Particle Hydrodynamics (ISPH) modeling technique is also employed in this study to compare with the performance of the SGUM-SWEs model. The SPH method is totally mesh free and thus it can efficiently track the large free surface deformation. The ISPH approach uses a strictly incompressible two-step semi-implicit solution method. By reproducing a documented experimental dam-break flow, it has demonstrated that both model simulation results gave good agreement with the experimental data at different measurement locations. However, the ISPH simulations showed a better prediction of the dam-break peak wave building-up time, where its superiority was demonstrated. Furthermore, the ISPH model could also predict more detailed flow surface profiles across the streamwise flow direction and the velocity and pressure structures.
dc.relation.isreferencedbyhttp://dx.doi.org/10.1080/19942060.2013.11015492
dc.subjectDam-break flow; Hydrostatic assumption; ISPH model; Mesh free; SGUM-SWEs model
dc.titleEvaluations of SWEs and SPH numerical modelling techniques for dam break flows
dc.status.refereedYes
dc.date.Accepted2013-08-27
dc.date.application2014-11-19
dc.typeArticle
dc.type.versionNo full-text in the repository


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