Fluids

Fluids

Particle Velocity in DEM

    • Taha
      Subscriber

      I am running DEM Simulation and this option has very significant effect on results. But I don't know its value. How to calculate this value or should this be equal to fluid (gas) velocity?


    • DrAmine
      Ansys Employee

      You can rely on free fall experiment (over a reference height in your model) to get a suitable value for it.

    • Taha
      Subscriber

      I am doing fluidization of solid particles using gas (air). Solid velocity is against gravity in positive (height) direction. How free fall experiment will help me get a suitable value.

      Height of bed is 400 mm.

    • DrAmine
      Ansys Employee

      umax= g*time hmax= 400= 0.5*g*time^2> you can then deduce the unmax..

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