Dear Roland, Thank for the quick, and detailed reply. I will try those and give you an update.
sincerely, Theodoros Soultanis Περιορίζοντας Roland Haas <[email protected]>: > Hello Thomas, > > there are basically two ways of doing this. > > 1. if you are using GRHydro or IllinoisGRHMD then both of then define a > variable "dens" which is the relativistic rest mass density. Asking for > a "sum" reducing of that variable computes the total rest mass *up to* > having to multiple it by the product of dx*dy*dz (ie the values you > specified in your parfile as CoordBase::dx, dy, dz). Something like > this: > > CarpetIOScalar::outScalar_vars = "GRhydro::dens" > CarpetIOSCalar::outScalar_reductions = "sum" > CarpetIOScalar::outScalar_every = 1 > > (untested!) is what you will have to add to your parfile. > > 2. you can use the RestMass thorn that has just been proposed on this > mailing list: > http://lists.einsteintoolkit.org/pipermail/users/2018-November/006632.html > > You can find the pull request for it on bitbucket: > > https://bitbucket.org/einsteintoolkit/einsteinanalysis/pull-requests/8/hydro_analysis-added-hydro_masses-in-order/diff > > the pull request contains example parfiles for both GRHydro and > IllinoisGRMHD. If you find it useful, please contact the authors in > particular Federico Cipolletta <[email protected]> (who spoke up on the > mailing list) who may be interested in working with you to document > "external interest" in the modification which helps getting it into the > ET. > > There have been a number of discussion relating to rest mass, is > conservation and how to measure its flux on the mailing list recently > and you may want to consult the mailing list archive or search it using > the information provided here: > > https://www.einsteintoolkit.org/support.html > > http://lists.einsteintoolkit.org/pipermail/users/ > > Yours, > Roland > >> Good morning, >> >> It would be greatly appreciated if you could give me some feedback >> regarding the following topic. >> >> I would like know whether it is possible to calculate the total >> baryonic mass of the given system during the evolution within the ET ( >> maybe there is a module which I was not able to find) or I have to >> compute it externally. >> >> Thank you. >> >> Sincerely, >> Theodoros Soultanis >> >> _______________________________________________ >> Users mailing list >> [email protected] >> http://lists.einsteintoolkit.org/mailman/listinfo/users > > > > -- > My email is as private as my paper mail. I therefore support encrypting > and signing email messages. Get my PGP key from http://keys.gnupg.net. _______________________________________________ Users mailing list [email protected] http://lists.einsteintoolkit.org/mailman/listinfo/users
