Method of treating unstructured concave cells in staggered-grid lagrangian hydrodynamics.

Rousculp, C. ; Burton, D.

Technical Information Center Oak Ridge Tennessee

关键词: Hydrodynamics;    Lagrangian function;    Dimensions;    Concave cells;   

RP-ID  :  DE2001772607

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A method is proposed for the treatment of concave cells in staggered-grid Lagrangian hydrodynamics. The method is general enough to be applied to two- and three-dimensional unstructured cells. Instead of defining a cell-point as the geometric average of its nodes (a cell-center), the cell-point is that which equalizes the triangular/tetrahedral area/volume in two/three dimensions. Examples are given.