一种物理量重映方法的研究

AN RESEARCH IN REMAPPING TECHNIQUES

§1.引言 求解流体力学问题,依照采用的坐标可分为Lagrange方法和Euler方法两大类[1]

The ALE (Arbitrary Lagrange-Euler) method is important that the periodic remapping of conserved quantities such as mass, momentum, and energy from one old, distorted mesh to another new mesh is considered in Lagrangian hydrodynamics calculation to simulate large deformation problems. A new conservative remapping technique for arbitrary meshes, especially for structured grids and unstructured grids, is presented in this paper. It is effective that the techniques are applied to modeling of examples by numerical experiments. Results are very helpful to the study of remapping techniques in numerical simulation.