In numerical simulation,quadrilateral structured mesh has the advantages of good stability,high accuracy and fast convergence speed,so the generation and optimization of quadrilateral mesh is of great significance.Aiming at solving the problem of difficult generation of high-quality quadrilateral structured mesh with preserved features,a structured mesh generation method based on patch-wise parameterization is proposed.Firstly,the model feature information is extracted,and it is used along with the genus information to decompose the model to obtain a set of three-dimensional patches.Then,the 3D patch is projected to two-dimensional parameter domain by parametric method,and frame field method is used to perform struc-tured partition.Then,the two-dimensional partitions are projected back to the original model to obtain the three-dimensional partitions,and the boundary discrete segment number model is solved based on the integer programming method.Finally,the four-sided mesh model is generated in the two-dimensional parameter domain,and the mesh quality is optimized by iterative smoothing.The mesh is projected back to the original model to obtain the final high-quality structured surface mesh.Experiments show that the proposed method can maintain the model feature information,and the mesh quality is higher than existing methods.
维普
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