The AMRClaw version of Clawpack provides Adaptive Mesh Refinement (AMR) capabilities in 2 and 3 space dimensions. (The two-dimensional code can also be used for 1-dimensional problems, see AMRClaw for 1d problems.)
Block-structured AMR is implemented, in which rectangular patches of the grid at level L are refined to level L+1. The general algorithms are described in BergerLeVeque98.
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