Computes diffusion timestep using CFL condition, for all diffusive processes currently implemented in code. More...
Go to the source code of this file.
Functions | |
| Real | diff_dt (MeshS *pM) |
| Computes diffusion timestep. | |
Detailed Description
Computes diffusion timestep using CFL condition, for all diffusive processes currently implemented in code.
These include:
- Ohmic dissipation, Hall effect, ambipolar diffusion
- Navier-Stokes and Braginskii viscosity
- isotropic and anisotropic thermal conduction With MPI parallel jobs, finds minimum dt across all processors. Function returns minimum diffusion dt.
CONTAINS PUBLIC FUNCTIONS:
- diff_dt() - computes dt
Definition in file diff_dt.c.
Function Documentation
Computes diffusion timestep.
Definition at line 29 of file diff_dt.c.
References CourNo, MeshS::Domain, MeshS::DomainsPerLevel, MeshS::dx, GridS::eta_AD, GridS::eta_Hall, GridS::eta_Ohm, eta_Ohm, fac, DomainS::Grid, GridS::ie, il, GridS::is, iu, GridS::je, jl, GridS::js, ju, kappa_aniso, kappa_iso, GridS::ke, kl, GridS::ks, ku, MeshS::NLevels, nu_aniso, nu_iso, GridS::Nx, MeshS::Nx, Q_AD, and Q_Hall.
Referenced by integrate_diff().
