Computational Domain Improvements in SpECTRE for Binary Black Hole Coalescences

As the simulation of a binary black hole system advances and the spacetime develops features at smaller length scales, the computational domain must continue to sufficiently resolve these details so that the simulation remains stable. This goal can be accomplished by means of a better initial choice of gridpoint distribution, dynamically evolving gridpoint distributions, and regridding the entire domain. We discuss each of these methods as used in SpECTRE in simulating black hole coalescences.