Fluids

Fluids

Physical Timescale in CFX for multiphase simulations

    • M_Omair_Khan
      Subscriber

      Hi, I am simulation boiling in a channel of steam generator using CFX. I am still having problems in convergence despite having a physical time scale of 1e-7s. What is the lower limit of physical time step?

    • Rob
      Ansys Employee
      I don't think there is one, within reason. If you work out how long it takes the flow to cross a cell (pick sensible values of velocity & cell size) what sort of value do you get?
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