ET Workshop Fall 2011 EOS
EOS
Discussion about which EOS interfaces Cactus has/had:
- EOS_Base
- EOSG_Base
- EOS_Omni
Who uses what:
- EOS_Omni: ET
- EOSG_Base: "nobody" -> to be archived
- EOS_Base: GaTech code, Whisky_Exp -> to remain, but will be dropped from the ET thornlist
- some version of Whisky has "own" interface to tabulated EOS
MHD
- MHD-Con2Prim assumes polytrope EOS
- Code in Wiki: is general, works for polytrope, ideal gas, and hybrid EOSs
- Josh: implementation of C2P for general EOS is now written for the "General" EOS, case, with th "Polytype" coming soon
- Josh: Some functions are not be fully implemented for the non-polytropic EOS_Omni code, but not critical, mostly atmosphere-related functions
Christian:
- To fix: single NS case for hot EOS
- handle multiple composition evolutions, requires EOS tweaks
- more important working EOS + MHD
MHD Con2Prim
To perform Conservative to Primitive variable conversion in MHD for a generic EOS, we need to use code that is not dependent on the adiabatic index, since it will not be constant. Some notes describing a possible way to implement a more generic Newton-Raphson routine have been uploaded, along with some code to perform this task.
Notes: File:Con2prim eosomni.pdf
