An FMM Poisson solver for RAMSES is extended to adaptive mesh refinement and adaptive time stepping, matching multigrid accuracy while conserving momentum better across coarse-fine interfaces and scaling better in parallel.
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A Scalable Fast Multipole Method Poisson Solver for the RAMSES code: II. Adaptive Mesh Refinement and Adaptive Time Stepping
An FMM Poisson solver for RAMSES is extended to adaptive mesh refinement and adaptive time stepping, matching multigrid accuracy while conserving momentum better across coarse-fine interfaces and scaling better in parallel.