Pre-implemented equilibria

For a complete list of implemented equilibria we refer to the Legolas docs, more specifically all descendants of the mod_equilibrium module. These all follow the naming convention smod_equil_* (“submodule equilibrium”). You can take a look at the documentation of every submodule for information on default parameters, which ones you can vary and where they comes from. Below we give a small overview of which equilibria are implemented together with the default included physical effects, and links to the source docs.

Adiabatic homogeneous medium: Cartesian, adiabatic
```
equilibrium_type = "adiabatic_homo"
```

Constant axial current: cylindrical, adiabatic

equilibrium_type = "constant_current_tokamak"

Couette flow: Cartesian, flow, viscosity
```
equilibrium_type = "couette_flow"
```
Discrete Alfvén waves: cylindrical, radiative cooling, parallel thermal conduction
```
equilibrium_type = "discrete_alfven"
```
Gold Hoyle: cylindrical, radiative cooling, parallel thermal conduction
```
equilibrium_type = "gold_hoyle"
```
Gravito acoustic waves: Cartesian, hydrodynamic, external gravity
```
equilibrium_type = "gravito_acoustic"
```
Gravito MHD waves: Cartesian, external gravity
```
equilibrium_type = "gravito_mhd"
```
Harris sheet with tearing modes: Cartesian, resistive
```
equilibrium_type = "harris_sheet"
```
Flux tube under coronal conditions: cylindrical, adiabatic
```
equilibrium_type = "coronal_flux_tube"
```
Flux tube under photospheric conditions: cylindrical, adiabatic
```
equilibrium_type = "photospheric_flux_tube"
```
Interchange modes: cylindrical, external gravity
```
equilibrium_type = "interchange_modes"
```
Internal kink modes in a force-free magnetic field: cylindrical, flow
```
equilibrium_type = "internal_kink"
```
Kelvin-Helmholtz instabilities: Cartesian, hydrodynamic, flow
```
equilibrium_type = "kelvin_helmholtz"
```
Kelvin-Helmholtz current-driven instabilities: cylindrical, flow
```
equilibrium_type = "kelvin_helmholtz_cd"
```
Magneto-rotational instabilities: cylindrical (accretion disk), flow, external gravity
```
equilibrium_type = "MRI_accretion"
```
Magnetothermal instabilities: cylindrical, radiative cooling, parallel thermal conduction
```
equilibrium_type = "magnetothermal_instabilities"
```
Rayleigh-Taylor instabilities: Cartesian, flow, external gravity
```
equilibrium_type = "rayleigh_taylor"
```
Rayleigh-Taylor + Kelvin-Helmholtz instabilities: Cartesian, flow, external gravity
```
equilibrium_type = "RTI_KHI"
```
Rayleigh-Taylor instabilities in a rotating theta-pinch: cylindrical, flow
```
equilibrium_type = "RTI_theta_pinch"
```
Resistive homogeneous medium: Cartesian, constant resistivity
```
equilibrium_type = "resistive_homo"
```
Resistive tearing modes: Cartesian, constant resistivity
```
equilibrium_type = "resistive_tearing"
```
Resistive tearing modes with flow: Cartesian, flow, constant resistivity
```
equilibrium_type = "resistive_tearing_flow"
```
Resonant absorption: Cartesian, constant resistivity
```
equilibrium_type = "resonant_absorption"
```

Rotating plasma cylinder: cylindrical, flow

equilibrium_type = "rotating_plasma_cylinder"

Stratified solar magnetic atmosphere: Cartesian, adiabatic
```
equilibrium_type = "isothermal_atmosphere"
```
Suydam cluster modes: cylindrical, flow
```
equilibrium_type = "suydam_cluster"
```
Taylor-Couette fluid: cylindrical (coaxial), hydrodynamic, flow, viscosity
```
equilibrium_type = "taylor_couette"
```
Taylor-Couette plasma: cylindrical (coaxial), flow, constant resistivity, viscosity
```
equilibrium_type = "tc_pinch"
```