Re: [Users] adding inner refinement levels with Carpet

Hello Miguel,

i was wondering whether there is a way to add inner refinement levels with CarpetRegrid2 (or CarpetRegrid) as a simulation progresses. let's say that i have some configuration that collapses to a black hole, and i want to keep resolving accurately the inner region. is there some way for me to tell CarpetRegrid to add inner levels whenever a certain condition is fulfilled, ie, enough time elapses, or some grid quantity (like the lapse) grows beyond a certain value?

The easiest way is likely to use the Triggers thorn (in CactusUtils/Triggers). See http://einsteintoolkit.org/gallery/bns/nsnstohmns.par in http://einsteintoolkit.org/gallery/bns/index.html for an example when simulating neutron stars.

Yours, Roland