The two-dimensional body-fitted grid was created by method of partial differential equation and zonal method.

Generation of body-fitted grids and transformation of the 2-D sediment movement equation in body-fitted coordinate regions;

In this article, we attempt to use some methods to improve-LES computation technology such as body-fitted grid ana.

Three dimensional multiple block body fitted grid in a manifold junction of two cylinders,which are at an arbitary angle and have different diameters,is generated in couples.

The body-fitted grids were generated using a system of elliptical partial differential equations.

Based on the direct simulation Monte Carlo (DSMC) method, the molecules tracing and locating method of structured body-fitted grids, which is called grid face vertical vector tracing method, is developed.

With the structured body-fitted grids, the movement of simulate molecular is traced and the collision molecules is selected.

The numerical model was established with irregular body-fitted mesh finite volume method and explicit MacCormack predictor-corrector method for solving these equations.

For investigating 3-D fluid flow in a Y-tube with circular cross section,a body-fitted mesh is gen-erated by using Thompson s method and a numerical prediction of the laminar flow is carried out by using SIM-PLE-C algorithm.

In this thesis a numerical model to solve the planear 2-D Depth-Integrated Flow(DIF) has been established with irregular body-fitted mesh Finite Volume Method and explicit MacCormack predictor-corrector .