An efficient predictor–corrector-based dynamic mesh method for multi-block structured grid with extremely large deformation and its applications
Tongqing Guo, Hao Chen, Zhiliang Lu · Modern Physics Letters B · 2018
Aiming at extremely large deformation, a novel predictor–corrector-based dynamic mesh method for multi-block structured grid is proposed. In this work, the dynamic mesh generation is completed in three steps. At first, some typical dynamic positions are selected and high-quality multi-block grids with the same topology are generated at those positions. Then, Lagrange interpolation method is adopted to predict the dynamic mesh at any dynamic position. Finally, a rapid elastic deforming technique is used to correct the small deviation between the interpolated geometric configuration and the actual instantaneous one. Compared with the traditional methods, the results demonstrate that the present method shows stronger deformation ability and higher dynamic mesh quality.