Abstract
The dynamics of thin layer incompressible and electrically conducting fluids is described by shallow water magnetohydrodynamics equations (SWMHD), for which the evolution is nearly two dimensional and the magnetic equilibrium lies in the third direction. In this article, a space–time conservation element and solution element (CESE) scheme is extended for numerical investigation of one- and two-dimension shallow water magnetohydrodynamics (SWMHD) with variable bottom topography. The presence of non-conservative terms and the inclusion of variable bottom topography on the right hand side of SWMHD equations poses some major challenges for any numerical scheme. The proposed CESE scheme differs from the previous techniques because of global and local flux conservation in a space–time domain without restoring to interpolation and extrapolation. To check the validity of the scheme, a number of test problems are considered. The results are also compared with the already existing results in the literature by central-upwind scheme.
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Saleem, M.R., Zia, S. & Qamar, S. A space–time CESE scheme for shallow water magnetohydrodynamics equations with variable bottom topography. J Braz. Soc. Mech. Sci. Eng. 39, 1563–1573 (2017). https://doi.org/10.1007/s40430-016-0678-4
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DOI: https://doi.org/10.1007/s40430-016-0678-4