Paper:	Heliospheric Modeling on Geodesic Grids
Volume:	459, 6th International Conference of Numerical Modeling of Space Plasma Flows (ASTRONUM 2011)
Page:	304
Authors:	Florinski, V.; Guo, X.; Balsara, D. S.; Meyer, C.
Abstract:	We present a new space plasma modeling framework based on a hexagonal spherical geodesic grid, comprised of an MHD plasma multiple fluid solver and a cosmic-ray kinetic transport solver. This report focuses on the MHD component designed to simulate flows of partially ionized plasmas in and around the Sun's heliosphere. A geodesic grid is an example of a uniform spherical tiling produced by a recursive division of a base icosahedron. The main benefit of the uniform solid angle coverage over spherical polar grids is the reduced restriction on the global time step, improving computational performance of both components of the code. Two simple MHD calculations, a time-dependent evolution of corotating interaction regions and a simulation of the large-scale structure of the heliosphere, are discussed.

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