Adaptive grid subdivision algorithm based on the youngs’ interface reconstruction algorithm
Received:December 24, 2008  Revised:September 13, 2009
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KeyWord:Youngs’ algorithm  grid subdivision  mixed cell  numerical simulation
刘春 北京理工大学 爆炸科学与技术国家重点实验室,北京 ;北京强度环境研究所,北京
马天宝 北京理工大学 爆炸科学与技术国家重点实验室,北京
宁建国 北京理工大学 爆炸科学与技术国家重点实验室,北京
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      In multi-material Eulerian hydrodynamic, Youngs’ interface reconstruction algorithm is often used to deal with mixed grids. Two materials have been considered in Youngs’ algorithm with complicated programming and low efficiency. The mixed grids are subdivided based on Youngs’ algorithm. Pure grids after subdivision will replace mixed grids. After subdivision scheme is analyzed, all of the possible distribution modes to eight neighboring cells are given. The simulation results verify that the grid subdivision algorithm improves precision efficiently without increasing the calculation account.