Numerical Simulation of Flow over Mountains Using a Channeled and Nested Grid Model.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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A channeled model with a fine resolution nested grid is used to study the flow over a mountain range. The basic primitive equation model is frictionless and adiabatic, with no vertical shear. The nesting is accomplished using a scheme C staggered grid arrangement. The solutions are obtained for three categories a coarse mesh solution, b uniform fine mesh solution, and c nested solution. Comparisons are made between solutions first with no mountain present, then with a mountain. During the early stages of the integration, the nested grid solution is improved over the coarse mesh solution. Difficulties arise at the boundaries, through, in both the coarse and fine meshes. Detailed discussions relating to these problems are presented, with suggestions on alternative boundary conditions. Author
- Fluid Mechanics