Hydro_InitExcision - Initial Excision for Hydro Evolutions

Andrea Nerozzi, Frank Löffler

March 13, 2018


This thorn initialises the excision-spacemask for GRHydro to specified forms. It is based on a similar version used to initialise the excision-mask for Whisky code.

1 Using This Thorn

Using this thorn is quite easy: You have to activate it in your parameter file and specify at least the following:

hydro_initexcision::hydro_initexcision = "yes"

In addition to that you may want to specify the type of excision zone you want to have. You can do this by

hydro_initexcision::hydro_initexcision_type = <TYPE>