Basic HTML version of Foils prepared Jan 31 99

Foil 31 7:Blended Dirchlet Outer boundary

From Overview of BBH Simulations Physics Colloquium -- Oct 29 1998. by Scott Klasky
Evolves "forever" with the following model problem
Schwarzschild (Ingoing Eddington-Finkelstein) and Kerr spacetimes used.
Inner boundary differencing done to O(h2) with the truncation error matched to centered differencing operators.
Excised 2-sphere of radius r0=2M-ph(h=grid spacing, p=number of buffer zones).
Blended shell of inner and outer radii, R0 and R1,
  • r> R1 Dirichlet values
  • R0<r<R1 Blending
  • R<= R0 Cauchy

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