Topics relate to Fluent, CFX, Turbogrid and more

Ship roll – damping problem

    • Sellera

      Hello, I'am modeling an ship roll natural decaiment in Ansys fluent, and validating it with an experimental results of my laboratory.

      My problem is that the ship is not damping as it should be as follows, experimental(orange) and what I obtained in Ansys(blue):

      Any idea on how can I make the results close to each other? Now, I'am working with my pressure coefficient around 1.6 to control better my dynamic mesh(I was 1 before) and I've seen little improvemente in 1.3 to 1.6 so I don't know if if better to try higher values.

    • Federico Alzamora Previtali
      Ansys Employee

      What is the working fluid? Is it the same as for your experiment?

      If working with liquids, I would suggest using Compressible liquid formulation in Materials tab. Sometimes, you may get pressure spikes with incompressible liquids, which may result in the overshoots that we are seeing.

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