7.12.3. Enhanced Turbulence Production Models

In flows with a dispersed phase, large particles in the dispersed phase tend to increase turbulence in the continuous phase due to the presence of wakes behind the particles. This is known as particle-induced turbulence.

The Enhanced Turbulence Production Model settings can be used to model particle-induced turbulence.

The options are:

  • None

    Particle-induced turbulence is not modeled.

  • Sato Enhanced Eddy Viscosity

    This option is available for Continuous Fluid | Dispersed Fluid, Continuous Fluid | Polydispersed Fluid and Continuous Fluid | Dispersed Solid pair combinations for Eulerian | Eulerian pairs, but does not apply when the Homogeneous multiphase model is active, and is not available for Continuous Fluid | Particle pairs. For details, see Fluid Pair Models Tab in the CFX-Pre User's Guide.

  • Turbulence Source Terms

    This option enables the use of a dissipation timescale model.

    The Dissipation Timescale Model options are:

    • Morel

    • Turbulence Timescale

    • Rzehak and Krepper

    • User Defined

      Set a value for Dissipation Timescale.

    Optionally set Dissipation Coefficient.

For theoretical information about enhanced turbulence production models, see Enhanced Turbulence Production Models in the CFX-Solver Theory Guide.