Computational study demonstrates the viability of a twisted icosahedral grid for shallow-water simulations, indicating improved accuracy for spherical fluid modeling.
The streamfunction-velocity potential form of shallow-water equations, implemented on a spherical geodesic grid, offers an attractive solution to many of the problems associated with fluid-flow simulations in a spherical geometry. Here construction of a new type of spherical geodesic grid is outlined, and discretization of the equations is explained. The model is subjected to the NCAR suite of seven test cases for shallow-water models.
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Heikes et al. (1995) studied this question.
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