计算力学学报2016，Vol.33Issue(4)：594-598,5.DOI:10.7511/jslx201604027
SPH方法Delaunay三角刨分与自由液面重构
Delaunay triangulation and free surface extraction for SPH method
摘要
Abstract
Smoothed particle hydrodynamics (SPH )is a meshfree,Lagrangian particle method,which combines the best features of Eulerian and Lagrangian grid-based methods,and has been successfully applied to different areas in sciences and engineering.The post-processing of SPH is not as straight forward and convenient as the grid-based methods since the information is based on irregularly distribu-ted particles rather than on a grid system.Moreover,free surfaces are usually difficult to be reconstruc-ted or extracted based simply on SPH particles.In this paper,a Delaunay triangulation is developed,in which a triangular mesh is generated form SPH particles through Delaunay triangulation,and the related information on SPH particles is converted to the triangular mesh.The SPH post-processing can then be conducted on the triangular mesh rather than on the SPH particles.Also free surfaces can be extracted from the generated Delaunay mesh.Two typical examples,the head-on collision of two liquid drops and dam collapse have been simulated.The obtained results with precisely extracted free surfaces demon-strate the effectiveness of the approach of Delaunay triangulation and free surface extraction for SPH method.关键词
SPH/Delaunay三角刨分/自由表面/后处理Key words
smoothed particle hydrodynamics (SPH )/Delaunay triangulation/free surface extraction/post-processing分类
数理科学引用本文复制引用
杨秀峰,刘谋斌..SPH方法Delaunay三角刨分与自由液面重构[J].计算力学学报,2016,33(4):594-598,5.基金项目
国家自然科学基金(11302237,11172306)资助项目 （11302237,11172306）
