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A path conservative finite volume method for a shear shallow water model

Abstract : The shear shallow water model provides a higher order approximation for shallow water flows by including the effect of vertical shear in the model. This model can be derived from the depth averaging process by including the second order velocity fluctuations which are neglected in the classical shallow water approximation. The resulting model has a non-conservative structure which resembles the 10-moment equations from gas dynamics. This structure facilitates the development of path conservative schemes and we construct HLL, 3-wave and 5-wave HLLC-type solvers. An explicit and semi-implicit MUSCL-Hancock type second order scheme is proposed for the time integration. Several test cases including roll waves show the performance of the proposed modeling and numerical strategy.
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Submitted on : Tuesday, September 24, 2019 - 10:27:16 AM
Last modification on : Tuesday, September 28, 2021 - 2:10:07 PM


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  • HAL Id : hal-02294026, version 2



Praveen Chandrashekar, Boniface Nkonga, Asha Meena, Ashish Bhole. A path conservative finite volume method for a shear shallow water model. 2019. ⟨hal-02294026v2⟩



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