A mini-app for finite element, moment-based radiation transport. The method — ultimately targeted at simulation of neutrino transport in core-collapse supernovae — includes the use of curvilinear coordinates and tabulated microphysics.
Oak Ridge National Laboratory
Other Related Applications/Codes
astrophysics, transport, DG, neutrinos
Spack Package Name
thornado-mini is a mini-app for neutrino transport in dense matter based on a semi-implicit discontinuous Galerkin (DG) method for the two-moment model of radiation transport using tabulated neutrino opacities. The mini-app is designed to solve a generalized deleptonization problem, i.e. a dense sphere of matter cooling and losing net lepton number as a function of time through isotropic radiation of neutrinos of all flavors. Neutrino transport--primarily from emission stemming from a centrally condensed proto-neutron star (i.e. a situation much like the thornado-mini configuration)-- will be the dominant computational load for core-collapse supernova simulations using the ExaStar ECP code CLASH (representing >80% of the total FLOP/s).