Basics of radiation hydrodynamics simulations of stellar surface convection
- Hydrodynamic equations (incl. gravity)
- Detailed non-local multi-D radiation transport
- Realistic Opacities (binned)
- Realistic Equation-Of-State
- + Detailed spectrum synthesis as postprocessing step
Assumptions: things that can be ignored/postponed:
- Magnetic fields (plasma physics)
- NLTE effects (ionization balance, chemistry)
- Global scales (rotation, surface curvature, ...)
- Small scales (turbulence)
- Stellar interior
- Circum-stellar envelope
Nordlund, Dravins (around 1982), later + Stein:
"We can get away with these simplifications."