|
大气科学 1994
The Preliminary Application of Adaptive Mesh in the Problems of Atmosphere and Ocean
|
Abstract:
Adaptive mesh method which raises in 80's is a new method to numerical generate grid by solving a boundary value problem of elliptic equation. It is a very efficient tool to numerical calculate partial differential equations on any shape of domain. Instead of uniformly equidistant difference scheme, it uses nonuniformly curvilinear coordinate system which can automatically adapts the features of the solution, e.g., the calculation grid points at boundary are coincident with actual boundary, and the density of grid points can be adjusted in any subregion and etC. The principle of adaptive mesh and its generation method were introduced in this paper, and applied it to the generation of the computational mesh on the region of South China Sea and the adaptive mesh for the numerical forecasting of typhoon track.