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    Analytical solution of shallow water equations for ideal dam-break flood along a wet bed slope

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    Guo_Journal_of_Hydraulic_Engineering.pdf (412.0Kb)
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    Publication date
    2020-02
    Author
    Wang, B.
    Chen, Y.
    Peng, Y.
    Zhang, J.
    Guo, Yakun
    Keyword
    Analytical solution
    Dam-break
    Rarefaction wave
    Shock wave
    Slope
    Wet bed
    Rights
    ©2019 American Society of Civil Engineers. This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://doi.org/10.1061/(ASCE)HY.1943-7900.0001683.
    Peer-Reviewed
    Yes
    
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    Abstract
    The existing analytical solutions of dam-break flow do not consider simultaneously the effects of wet downstream bottom and bed slope on the dam-break wave propagation. In this study, a new analytical solution for the shallow-water equations (SWE) is developed to remove this limitation to simulate the wave caused by an instantaneous dam-break. The approach adopts the method of characteristics and has been applied to simulate the dam-break flows with different downstream water depths and slopes. The analytical solutions have been compared with predictions by the lattice Boltzmann method and the agreement is good. Although the proposed analytical solution treats an idealized case, it is nonetheless suitable for assessing the robustness and accuracy of numerical models based on the SWE without the frictional slope.
    URI
    http://hdl.handle.net/10454/17286
    Version
    Accepted manuscript
    Citation
    Wang B, Chen Y, Peng Y et al (2020) Analytical solution of shallow water equations for ideal dam-break flood along a wet bed slope. Journal of Hydraulic Engineering. 146(2): 06019020.
    Link to publisher’s version
    https://doi.org/10.1061/(ASCE)HY.1943-7900.0001683
    Type
    Article
    Collections
    Engineering and Informatics Publications

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