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Multiphase Flows

Multiphase Flows

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  3. What is the influence of turbulence damping factor for Eulerian multiphase flows with kw SST?

What is the influence of turbulence damping factor for Eulerian multiphase flows with kw SST?

Tagged: 19, fluent, fluid-dynamics, MP - Free Surface Flow, Other, turbulence
    • May 15, 2023 at 8:32 am
      SolutionSolution
      Participant

      For 2-phase flows with strong transverse gradient of velocity, RANS 2-eq. models predict a large production of k through interface. This large production of k affects the levels of turbulent viscosity at interface. For k-ω models, a correction exists to increase the level of ω based on the gradient of volume fraction so that dissipation term is increased in k equation. This correction corresponds to the « turbulence damping » option in the turbulence model GUI. Such option has been tested on a simple configuration and the damping effects were observed on the turbulent kinetic energy level at the interface. See attached document for further details.

      Attachments:
      1. 2055576.pdf

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