A Compatible Lagrangian Hydrodynamics Algorithm for Unstructured Grids
J. Campbell, Mikhail Shashkov · 2003
This paper describes the implementation of a compatible hydrodynamics algorithm, including subzonal pressures and articial viscosity, on an unstructured grid. We assume that the unstructured grid is made from arbitrary polygons, so we can make no assumption as to the maximum number of sides a zone may have or the number of zones that meet at a node. An unstructured grid oers more exibility than a logical grid in the construction of the initial grid, especially for domains with complex geometries. Using an unstructured grid also allows one to change the grid connectivity and rene the grid during calculations if required, but this is not considered in this paper.