Abstract
We extend the well-balanced second order hybrid scheme developed in Donat and Martinez-Gavara (J. Sci. Comput., to appear) to the one-dimensional and two-dimensional shallow water system. We show that the scheme is exactly well-balanced for quiescent steady states, when a particular integration formula is employed, just as in the scalar models considered in Donat and Martinez-Gavara (J. Sci. Comput., to appear). A standard treatment of wet/dry fronts can easily be adapted, obtaining a robust scheme that produces well-resolved numerical solutions.
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Martinez-Gavara, A., Donat, R. A Hybrid Second Order Scheme for Shallow Water Flows. J Sci Comput 48, 241–257 (2011). https://doi.org/10.1007/s10915-010-9440-8
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DOI: https://doi.org/10.1007/s10915-010-9440-8