Fluids

Fluids

NITA for Sloshing Case

    • imungan
      Subscriber

      Hello. I am performing sloshing in tank analysis. When i am enabled nita, i could not see any movement in result as sloshing. However when i am disabled the nita selection, i can see the movement. I am sure that i did not miss any other difference between two cases. Could you clarify this issue?

    • DrAmine
      Ansys Employee

      Is it the same case same settings same time step strategy one time with ITA and one time with NITA? Is it straight NITA or a hybrid one? Which version are you using?

    • imungan
      Subscriber

      They are same case. I used straight nita

    • DrAmine
      Ansys Employee

      Maybe it is "converging" so fast and we require some more outer iterations. Can you allow Hybrid NITA (start with conservative). Problem with NITA is that it won't behave well for tighlty coupled physics and assume here the reaction to the tank acceleration requires more than one single outer iteration!

    • imungan
      Subscriber

      already i do not expect completed movement. However it is seen as stationary. I will try hybrid, then i will write.

       

      Thanks

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