Investigation on the second order remapping algorithm for laser-target coupling

In 2D hydrodynamic simulation,Lagrangian mesh are prone to distort.The ALE(Arbitrary Lagrangian-Eulerian) method which combines the best features of Lagrangian and Eulerian representation was widely used to solve large distortion problems.Based on laser-target coupling,a new second order conservative remapping algorithm for physical variables utilizing mass flux was developed.In this paper,the new algorithm is applied in 1D laser-target code and has satisfactory results in practical model simulations.