The method for defining turbulence.

K + Omega

Direct specification of the values of and . A Turbulent Kinetic Energy node and a Specific Dissipation Rate node will be added to the Values node.

Intensity + Length Scale

Calculation of and from a specified turbulence intensity and length scale using Eqn. 293. Do not use this method if the velocity field is initialized to zero. A Turbulence Intensity node and a Turbulent Length Scale node will be added to the Values node.

Intensity + Viscosity Ratio

Calculation of and from the turbulence intensity () and the ratio of turbulent to laminar viscosity () using Eqn. 294. Do not use this method if the velocity field is initialized to zero. A Turbulent Viscosity Ratio node and a Turbulence Intensity node will be added to the Values node.