Basic HTML version of Foils prepared Jan 31 99

Foil 30 7:Outer Boundary

From Overview of BBH Simulations Physics Colloquium -- Oct 29 1998. by Scott Klasky
1 3 methods
  • 1. Blended Dirichlet outer boundary conditions.
    • Stable evolutions can be obtained!
    • Only works for limited cases with exact CC.
  • 2. Perturbative OB PRL 80 (1998) 1812-1815
    • Easier than CCM, since perturbative calculations are not expensive, and the matching is not complex.
    • Problems are that it needs to be far from the hole ~20M, and we need separate backgrounds from perturbations.
  • 3. Cauchy-characteristic matching (PRL 80 (1998) 3915-3918)
    • Works well for simple test cases.
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