Development of a software package for 3D structured mesh generation

Abstract

A 3D structured-mesh generation package has been developed using the transfinite interpolation (TFI) and/or the elliptic mesh generation methods to generate 3D structured meshes for the computational domain surrounding 3D regions (objects). A boundary stretching coefficient was used in the first method. And an attraction function was used in the second one. These stretching coefficient and attraction function are used to control the properties, i.e. the distribution density of the mesh points, of the meshes to be generated. The mesh generation function of the package is tested and shows its robustness. In addition, a friendly graphic user interface has also been designed and developed to assist in viewing and presenting the topographic data and the generated meshes. The package has been applied to the generation of 3D computational meshes used as the input of a computational fluid dynamics model for simulations of turbulent compressible atmospheric flows and air pollutant transport/dispersion in practical 3D domains.