Broke down the problem into a series of experiments
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Placing a different number of buffer zones in AH.
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Evolve moving black holes
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Using outer boundary conditions improve evolutions.
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Longest running 3D evolution of static black hole.
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Cauchy evolution of a propagating hole
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Black hole excision is indeed practical and feasible in a situation where the excised regions propagate through the computational domain
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Issue is now with maintaining coordinate conditions and less with finite difference stability at the inner boundary
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