General Mechanical

General Mechanical

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2 way FSI using System coupling GUI

    • mohammedlaminemekhalfia
      Subscriber
      Dear Ansys users.

      I am so excited about this new platform ( the first impression is awesome)

      Well, I am working on a 3D fluid-structure interaction problem, my problem consist of a 3D twisted blade excited by air jets though a pipe of 8 mm diameter ( a step function of 1 bar amplitude) using a profile


      The workbench is set to (transient + fluent) workstation as the parameters are as follow
      ---- Transient settings:
       
      for the fixed suppot:


      System coupling interface


      ------- Fluent side









      -------- SC parameters

      Duration control: 2s

      Step control:  0.0005 time step size

      Coupling Interface: One set to fluent  at blade_wall (System coupling region)

      Two  set to transient system coupling region

      Data transfer  Dispolacement/force

      Relaxation factor to 0.5

      Convergence target 0.01

      The questions

      •  after finishing the simulation , I plot the displacement versus time at the tip of the blade

      I was expecting a step, but the ramp at the edge, this I could not find reason why!!!!
      The following was ploted from 1 way FSI using external data:

      •  The second issue, when I used system coupling GUI and launch the solution, the number of folvers set only to 1 which cause a big processing time even that I reset the values mannually to a higher solver numbers both in transient and fluent and the number of licences is available, yet the problem occurs





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