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为提高结构化网格生成效率,研究了基于涡轮叶片网格划分的自动分区策略。为方便进行结构化网格划分,根据涡轮叶片几何参数,计算各结构包络面,自动在计算域中生成辅助面,以构建六面体拓扑结构。为提高网格质量,提出了具有通用性的“填充虚拟结构”优化方法,将计算域的分区细化。结果表明策略人工干预少,网格生成周期短,适用于具有相似拓扑结构的叶片模型,解决了多分区结构化网格生成中分区量大的难题,有助于实现叶片结构设计过程的自动优化。
In order to improve the efficiency of structured grid generation, automatic partitioning strategy based on turbine blade meshing is studied. In order to facilitate the structural meshing, the envelope of each structure is calculated according to the geometric parameters of turbine blades, and the auxiliary surface is automatically generated in the calculation domain to construct the hexahedron topology. In order to improve the quality of the grid, a universal “filling virtual structure” optimization method is proposed to refine the partition of computing domain. The results show that the strategy has fewer human interventions and shorter mesh generation period, and is suitable for leaf models with similar topological structure. It solves the problem of large partitioning in multi-partition structured grid generation and helps to realize automatic optimization of leaf structure design process .