Parametric Non-structural Mesh Generation System Development

In the CFD calculations, the calculation accuracy can be greatly improved and the computationtime can be saved if the mesh can be generated quickly and efficiently. Such a method is more neededespecially in the process of solving complex problem domain. This paper developed a system that caneasily establish the parameters of the three-dimensional model and achieve a friendlyhuman-computer interaction. The pre-treatment process of CFD can be simply and quickly completed,so as to achieve the three-dimensional structure of visual display products, short the developmentcycle. A set of grid generation system was developed based on the completed building model. Thispaper used the Delaunay algorithm to achieve a two-dimensional, three-dimensional computationaldomain meshing and finally a set of unstructured grids were generated.The main contents in this paper as follows,1， The complex three-dimensional shape was ultimately be accurately described, so as to achieve athree-dimensional display and interaction of the model by the definition of simple geometric shapes(such as rectangle, cylinder, circular cone etc.), data representation and the he poor Booleanoperations of "intersection"、"union" and "subtract" for the basic shape based on OpenGL,2， The physical geometry structure can be easily described by defining parametric scripting language ofthe three-dimensional shape. An effective way was be provide to achieve the process from modelconstructed to grid generated. The CFD pre-processing work can be simply and fast completely.3， Delaunay algorithm for unstructured grid generation was used to achieve the non-structural meshingof the computational domain. So the users can control the grid parameters, and finally save the griddata. In the end, a simplify combustor liner was used as a example to build a three-dimensional model,and calculated generated grid in its the computational domain...