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PISO or Coupled (VOF)

    • Nguyen Van Toan

      Hi everyone,

      When we simulate multiphase flow using VOF model, what the Pressure-Velocity Coupling Method is appropriate? PISO or Coupled? Which is faster? And for FSI simulation, is there only Coupled available?

      Thank you so much!

    • DrAmine
      Ansys Employee
      A general recommendation in Fluent Multiphase whenever time step size is small PISO will perform better from computational time perspective. Though, I saw a lot of cases running much more efficient using Coupled method . So at the end you need to select the method which works better for you.

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