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.
  
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  1996-1997 Mathematics in High Performance Computing