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HAMeRS is a compressible Navier-Stokes/Euler solver with the patch-based adaptive mesh refinement (AMR) technique. The parallelization of the code and all the construction, management and storage of cells are facilitated by the Structured Adaptive Mesh Refinement Application Infrastructure (SAMRAI) from the Lawrence Livermore National Laboratory (LLNL).

The code consists of various explicit high-order finite difference shock-capturing WCNS's (Weighted Compact Nonlinear Schemes) for capturing shock waves, material interfaces, and turbulent features. The AMR algorithm implemented is based on the one developed by Berger et al.