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Logically rectangular finite volume methods with adaptive refinement on the sphere
Marsha J Berger1, Donna A Calhoun, Christiane Helzel
1Courant Institute of Mathematical Sciences, New York University, New York, NY 10012, USA.
Abstract:
The logically rectangular finite volume grids for two-dimensional partial differential equations on a sphere and for three-dimensional problems in a spherical shell introduced recently have nearly uniform cell size, avoiding severe Courant number restrictions. We present recent results with adaptive mesh refinement using the GeoClaw software and demonstrate well-balanced methods that exactly maintain equilibrium solutions, such as shallow water equations for an ocean at rest over arbitrary bathymetry.
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