General Mechanical

General Mechanical

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Two way FSI – Run time Error

    • Abishek Sreenivasan

      Hi all,

      I am trying to run a Fluid Structure Interaction simulation (2 way - Using Fluent, Transient Structural and System Coupling) and when the simulation gets to around 750 timesteps (time step of 5e-5 seconds) I get this error "(DP 0) There is no active application. Update failed for the Solution component in System Coupling.  The coupled update for system Transient Structural threw an exception. Unable to update solution. Either the application crashed or Workbench lost communication with it.". Any insight what might cause this and what I can do to rectify it would be very appreciated. Thank you in advance.

    • Erik Kostson
      Ansys Employee


      Perhaps go into the transient structural analysis system and look in the solution information (Solver Output) for errors as start.


      Post any errors here so users/forum members can give feedback.


      All the best



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