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Grzegorz Kowal beee9ee2d4 Initial support for the MHD equations.

VARIABLES

 - add indices for the magnetic field components, both face and cell
   centered

SOLVER, MHD

 - add support for the magnetohydrodynamic (MHD) equations to the
   subroutines cons2prim(), prim2cons()

 - add MHD flux and the fastest speed calculation in the subroutine
   fluxspeed()

 - include magnetosonic speed in the calculation of the maximum speed in
   the system required for estimation of the new time step

 - extend the HLL solver in subroutine hll() to support MHD

 - calculate the magnetic field update according to a CT scheme in the
   subroutine update()

INTERPOLATION

 - add subroutine magtocen() to interpolate cell centered magnetic field

EVOLUTION

 - add evolution of the magnetic field components in the evolve_euler()
   and evolve_rk2() time integration subroutines

 - also call the subroutine magtocen() in the right places

BOUNDARY CONDITIONS

 - support for magnetic field boundary update only in the case of blocks
   with the same level so far; later we need to include proper
   restriction and prolongation for the magnetic field to keep its
   divergence equal zero

PROBLEMS, BLAST

 - extend the blast problem to include the initial magnetic field

IO, HDF5

 - write down in a HDF5 file magnetic field components

2009-10-28 00:12:18 -02:00

src

Initial support for the MHD equations.

2009-10-28 00:12:18 -02:00