| FINITE-VOLUME TVD ALGORITHM FOR DAM-BREAK FLOWS IN OPEN CHANNELS |
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| 作者姓名： | Wang Jia-song School of Mechanical Engineering Shanghai Jiaotong University Shanghai China He You-sheng School of Civil Engineering and Mechanics Shanghai Jiaotong University Shanghai China |
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| 作者单位： | Wang Jia-song School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200030，China，He You-sheng School of Civil Engineering and Mechanics，Shanghai Jiaotong University，Shanghai 200030，China |
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| 摘 要： | 1 . INTRODUCTIONThepropagationofborewavesorthemove mentoffreesurfaceflowscausedbydambreak ing ,orsuddenopeningorclosingofasluiceinachannelhasincreasedinterestinenvironmentalandhydraulicengineering .Generallyitcanbede scribedbytheShallowWaterEquations (SWE )throughtheintegrationoftheNavier Stokesequationsoverdepthwiththeassumptionsofhydrostaticpressuredistributionandmildchannel bedslope .ManyclassicaltechniquesthatwereusedforsolvingtheSWEcanbefoundinthepaststudies .However ,whendiscon…
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FINITE-VOLUME TVD ALGORITHM FOR DAM-BREAK FLOWS IN OPEN CHANNELS |
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| Wang Jia-song School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai ,China,He You-sheng School of Civil Engineering and Mechanics,Shanghai Jiaotong University,Shanghai ,China.FINITE-VOLUME TVD ALGORITHM FOR DAM-BREAK FLOWS IN OPEN CHANNELS[J].Journal of Hydrodynamics,2003,15(3). |
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| Authors: | WANG Jia-song HE You-sheng |
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| Abstract: | A finite-volume Total Variation Diminishing (TVD) scheme is presented for modeling dam-break flows in open channels. This method is used for solving the 2D shallow water equations on arbitrary quadrilateral meshes, based upon a second-order hybrid TVD scheme with an optimum-selected limiter in the space discretization and a two-step Runge-Kutta approach in the time discretization. Verification for a circular dam-break problem is carried out by comparing the present results with others and very good agreement is shown. The present algorithm is then used to predict dam-break flow characteristics in open channels such as in furcated channels. More complicated unsteady flow characteristics in these furcated channels than in the regular channels studied previously can observed in this work. |
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| Keywords: | Total Variation Diminishing (TVD) finite-volume method dam-break flow furcated channel |
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