Weighted Averaged Flux-Type Scheme for Shallow-Water Equations with Fractional Step Method

摘要: A numerical model describing two-dimensional fluid motions has been developed on an unstructured grid system. By using a fractional step method, problem governed by the shallow-water equations is treated as two one-dimensional problems. Thus it possible to simulate problems with higher computational efficiency. One-dimensional are solved upwind total variation diminishing version of second-order weighted averaged flux method approximate Riemann solver. Numerical oscillations commonly observed in schemes controlled exploiting limiter. For general purpose, can arbitrary topography, treat moving boundary, and resolve shock. Five ideal practical tested. Very accurate results observed.