Campuses:

Adaptive Mesh Refinement on Logically-Rectangular Grids for Hyperbolic Systems using AMRCLAW

Wednesday, April 30, 1997 - 11:15am - 12:00pm
Keller 3-180
Randall LeVeque (University of Washington)
CLAWPACK (Conservation LAW PACKage) is a collection of fortran subroutines for solving hyperbolic systems of conservation laws in one and two space dimensions, both with and without source terms, that are based on high-resolution multi-dimensional wave propagation methods. Recently this software has been merged with Marsha Berger's adaptive mesh refinement codes to create AMRCLAW, which allows adaptive refinement to be applied to a wide range of hyperbolic systems. The methods are implemented in a form that allows

Extensions to hyperbolic problems that are not in conservation form, such as acoustics in a heterogeneous medium with varying sound speed.

The use of capacity-form differencing that allows easy extension to problems with varying capacity of the medium, e.g. porosity in groundwater flow or density in a stratified atmosphere.

Application on logically-rectangular curvilinear grids.

A version of the code in two space dimensions is available, see

http://www.amath.washington.edu/~rjl/amrclaw/

for the code and some sample results. A three-dimensional version is currently being developed together with Jan Olav Langseth and Dave McQueen.