Modeling > Modeling Turbulence > Using Spalart-Allmaras Turbulence > Field Functions Reference

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Field Functions Reference

The following primitive field functions are made available to the simulation when the Spalart-Allmaras turbulence model is used. These objects all have the same base properties.

Modified Diffusivity

The transported variable .

   

Turbulent Viscosity

The turbulent viscosity .

   

Effective Viscosity

The sum of the laminar and turbulent viscosities, .

   

Turbulent Viscosity Ratio

The ratio of turbulent to laminar viscosity, .

   

Wall Y+

The value where is the reference velocity, is the normal distance from the centroid to the wall in wall-adjacent cells and is the kinematic viscosity.

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