Semi-implicit numerical modeling of nonhydrostatic free-surface flows for environmental problems
- 1 December 2002
- journal article
- Published by Elsevier BV in Mathematical and Computer Modelling
- Vol. 36 (9-10), 1131-1149
- https://doi.org/10.1016/s0895-7177(02)00264-9
Abstract
A semi-implicit numerical model for the three-dimensional Navier-Stokes equations on unstructured grids is derived and discussed. The governing differential equations are discretized by means of a finite difference-finite volume algorithm which is robust, very efficient, and applies to barotropic and baroclinic, hydrostatic and nonhydrostatic, and one-, two-, and three-dimensional flow problems. The resulting model is relatively simple, mass conservative, and unconditionally stable with respect to the gravity wave speed, wind stress, vertical viscosity, and bottom friction.Keywords
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