.. _output_variables:

Output variables
----------------

Output Variables
================

   ========================= ===================== ==================================
    Variable Name             Alias                 Definition
   ========================= ===================== ==================================
    temperature               T, t                  Temperature in (:math:`K`)
    temperaturegrad                                 Temperature gradient vector
    potentialtemperature                            Potential temperature in (:math:`K`)
    pressure                  p                     Pressure (:math:`Pa`)
    gauge_pressure                                  Pressure relative to the reference value (:math:`Pa`)
    density                   rho                   Density (:math:`kg/m^3`)
    velocity                  V, v                  Velocity vector (:math:`m/s`)
    velocitygradient                                Velocity gradient tensor
    cp                                              `Pressure coefficient <https://en.wikipedia.org/wiki/Pressure_coefficient>`_
    totalcp                                         Total pressure coefficient
    mach                      m                     `Mach number <https://en.wikipedia.org/wiki/Mach_number>`_
    viscosity                 mu                    Dynamic viscosity (:math:`Pa/s`)
    kinematicviscosity        nu                    Kinematic viscosity (:math:`m^2/s`)
    vorticity                                       `Vorticity vector <https://en.wikipedia.org/wiki/Vorticity>`_ (:math:`1/s`)
    Qcriterion                                      Q criterion
    reynoldstress                                   `Reynolds stress tensor <https://en.wikipedia.org/wiki/Reynolds_stress>`_
    helicity                                        `Helicity <https://en.wikipedia.org/wiki/Hydrodynamical_helicity>`_
    enstrophy
    ek
    lesregion
    turbulenceintensity       ti                    Turbulence intensity
    turbulencekineticenergy                         `Turbulence kinetic energy <https://en.wikipedia.org/wiki/Turbulence_kinetic_energy>`_ (:math:`J/kg`)
    turbulenceeddyfrequency                         `Turbulence eddy frequency <https://en.wikipedia.org/wiki/SST_(Menter%E2%80%99s_Shear_Stress_Transport)#K-W_Closure>`_ (:math:`1/s`)
    eddy                                            Eddy viscosity (:math:`Pa/s`)
    cell_velocity
    cellzone
    cellorder
    centre                                          Cell centre location
    viscouslengthscale                              Minimum distance between cell and its neighbours
    walldistance                                    Wall distance (:math:`m`)
    sponge                                          Sponge layer damping coefficient
    menterf1                                        Menter SST blending function
   ========================= ===================== ==================================


Surface Only Quantities
=======================


   ========================= ===================== ==================================
    Variable Name             Alias                 Definition
   ========================= ===================== ==================================
    pressureforce                                   Pressure component of force on a face
    pressuremoment                                  Pressure component of moment on a face
    pressuremomentx                                 Component of pressure moment around x axis
    pressuremomenty                                 Component of pressure moment around y axis
    pressuremomentz                                 Component of pressure moment around z axis
    frictionforce                                   Skin friction component of force on a face
    frictionmoment                                  Skin friction component of moment on a face
    frictionmomentx                                 Component of skin friction moment around x axis
    frictionmomenty                                 Component of skin friction moment around y axis
    frictionmomentz                                 Component of skin friction moment around z axis
    roughness                                       Wall roughness height
    yplus                                           Non-dimensional wall distance
    zone                                            Boundary zone number
    cf                                              Skin friction coefficient
    facecentre                                      Face centre location
    frictionvelocity         ut                     Friction velocity at the wall
   ========================= ===================== ==================================