Automatic generation method for CFD grid of turbomachinery blade tip gap

Compared with the prior art, the automatic generation method for the CFD grid of the blade tip clearance of the turbomachinery has the following advantages that (1) the structured grid is adopted, sothat the data structure is simple, and the implementation is easy; (2) structured grids are adopted, high-quality flat grid units are easy to generate, the number of the grid units is greatly reducedon the premise of ensuring the quality of the grids, and the calculation speed is increased; and (3) if the main runner area between the adjacent blades is divided into the layered partition structured grids in the same way as that in the step (4), seamless butt joint of the main runner grids and the blade top gap grids can be realized, namely grid points on the interface of the two areas can be in one-to-one correspondence, so that the data structure and the CFD algorithm are simplified, and the calculation speed is increased. 本发明公开了一种叶轮机械叶顶间隙CFD网格自动化生成方法，与现有技术相比，具有以下优点：（1）采用结构化网格，数据结构简单，易于实施；（2）采用结构化网格，易于生成高质量的扁平状网格单