Non-hydrostatic pressure shallow flows: GPU implementation using finite volume and finite difference scheme

C. Escalante, T. Morales de Luna and M.J. Castro

Applied Mathematics and Computation, 2018, vol. 338, issue C, 631-659

Abstract: We consider the depth-integrated non-hydrostatic system derived by Yamazaki et al. An efficient formally second-order well-balanced hybrid finite volume finite difference numerical scheme is proposed. The scheme consists of a two-step algorithm based on a projection-correction type scheme initially introduced by Chorin–Temam [15]. First, the hyperbolic part of the system is discretized using a Polynomial Viscosity Matrix path-conservative finite volume method. Second, the dispersive terms are solved by means of compact finite differences. A new methodology is also presented to handle wave breaking over complex bathymetries. This adapts well to GPU-architectures and guidelines about its GPU implementation are introduced. The method has been applied to idealized and challenging experimental test cases, which shows the efficiency and accuracy of the method.

Keywords: Non-hydrostatic Shallow-Water; Finite difference; Finite volume; GPU; Tsunami simulation; Wave breaking (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:338:y:2018:i:c:p:631-659

DOI: 10.1016/j.amc.2018.06.035

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