$Id$

This directory contains a sample of "special" files that deal with
specialized applications. It allows the user to do completely new things
with the code that have nothing to do with hydro or MHD, for example.

The best way to start a new special module is to go to pencil-code/src/
and copy nospecial.f90 to special/NewSpecialModule.f90 and start editing
NewSpecialModule.f90 for your purposes. This approach is better than
modifying an existing special module, because the tend to be too specialized!
The nospecial.f90 module also contains lots of comments.

Example:
  cp nospecial.f90 special/oscillation_0D.f90

However, looking for example also at special/lorenz_gauge.f90 might indeed
be a good idea.

-----------------------------------------------------------------------------
List of routines (31-Jul-2016)
`
MHD:
  advective_gauge.f90 (dynamical gauge transformation; see Candelaesi+11)
  lorenz_gauge.f90 (solve dphi/dt = -cA^2 * divA for scalar potential)

Solar:
  1D_loop.f90
  coronae.f90
  footpoints.f90
  solar_corona.f90
  twist_inject_delta.f90
  twist_inject.f90

Accretion Disks:
  alphadisk.f90
  baroclinic_run.f90
  fargo.f90

Meanfield MHD:
  meanfield_alpm_alternate.f90
  meanfield_alpm_etat.f90
  meanfield_alpm.f90
  meanfield_dynamo_z.f90
  meanfield_e_tensor.f90

Other applications:
  atmosphere.f90
  flowaroundsphere.f90
  gravitational_waves.f90 (temporary versio, under development)
  gross_pitaevskii.f90
  neutron_star.f90

Chiral MHD:
  chiral_fluids.f90
  chiral_fluids_gradtheta.f90

Radiation:
  spiegel.f90

Other
  bc_strat.f90
  boussinesq.f90
  chem_stream.f90
  dynamical_resistivity.f90
  flux_limdiff.f90
  internal_flow.f90
  jet.f90
  localshock.f90
  newton_cooling.f90
  oscillation_0D.f90
  oscillation_0D_Lorenz.f90
  param_instab.f90
  photoelectric_dust.f90
  rtime_phiavg.f90
  set_gravity.f90
  shell.f90
  stellartide.f90
  streamfunction_dimensional.f90
  streamfunction_direct.f90
  streamfunction.f90
  streamfunction_fullmultigrid.f90
  streamfunction_multigrid.f90
  symbreak.f90
  turbpotential.f90

Examples
  van_der_pol.f90