中文摘要：

较好的人工粘性需要满足较小的计算开销、不能去除真实具有的涡运动等条件.提出一种应用于拉氏数值模拟中基于Lew人工粘性,同时增加了限制器的人工粘性方法.可以有效减少数值模拟结果对网格的依赖;采用特征值限制器控制施加的人工粘性大小,通过限制器能够区分激波压缩和等熵压缩;方便应用在二维、三维,结构网格或者非结构网格上.

英文摘要：

An artificial viscosity is presented for Lagrangian hydrodynamics method.The formulation is based on artificial viscosity first presented by Lew.It contains a limiter switching off viscosity for shockless compression.The artificial viscosity reduces dependence of solution on relation of grid to flow structure.The eigenvalue viscosity limiter controls magnitude of the artificial viscosity.By the limiter it is able to distinguish between adiabatic compression and shock compression.The formulation is applicable to any dimensions and to logically rectangular or unstructured grids.