Adaptive grid subdivision algorithm based on the Youngs' interface reconstruction algorithm

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.