OK~ Thank you for the information. Roland Haas <[email protected]> 於 2018年11月8日 週四 下午11:26 寫道：
> Hello Jie, > > you will most likely need another thorn. I would say the closest thorn > that does what you would like to do is the "Outflow" thorn (in > EinsteinAnalysis/Outflow) that can track the amount of rest mass > flowing through a SphericalSurface. So you could make it measure the > amount of material crossing the apparent horizon and also eg the among > falling through the innermost stable circular orbit. > > For energy you'd have to decide on some efficiency of converting rest > mass to energy (for the material falling through the ISCO). > > You can use the Outflow test file as a starting point (and also consult > its documentation: > > https://www.einsteintoolkit.org/thornguide/EinsteinAnalysis/Outflow/documentation.html): > > https://bitbucket.org/einsteintoolkit/einsteinanalysis/raw/05e1f24828dc5a0a819d57225957954da538c031/Outflow/test/moving_tov.par > > Yours, > Roland > > > Dear all, > > I want to add energy into the accretion disk of the binary neutron star > > merger in gallery code( > https://einsteintoolkit.org/gallery/bns/index.html)and > > calculate the accretion rate (dM/dt) do I need to add some other thorn > into > > the simulation, or could just modify the parameter file of the gallery > code? > > Thank you > > Gratefully, > > Jie > > > > -- > My email is as private as my paper mail. I therefore support encrypting > and signing email messages. Get my PGP key from http://pgp.mit.edu . >
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