Fluids

Fluids

Problem with convergance of solution Fluent

    • gkchappa
      Subscriber

      Hello


      I am simulating Cooling fan module which is placed in a rectangular pipe, I have a problem with convergence, I ran 5000 iterations but still, the solution isn't convergence, any suggestion to solve this Issue 


      Steady state -MRF Method 


      K omega SST turbulence model 


      boundary conditions- 0 pa inlet and 0pa outlet pressure     mesh : 4.4 million cells


       

    • Karthik R
      Administrator

      Hello,


      Can you create a monitor (say avg. velocity at the outlet or avg. velocity at the inlet) and see if you are reaching a steady solution?


      Also, please take a look at your mass flux reports. Is the net value small compared to the mass flux crossing the inlet / outlet boundaries?


      Thanks.


      Karthik

    • gkchappa
      Subscriber

      hi kremella, thank you for reply , 


      will check them, 


      I have a question regarding setup, instead of creating many solid-fluid interfaces, I just made boolean operation and removed stator(solid) or shroud from the enclosure. so do you think it might affect convergence?


      B.R


      Gagan

    • Rob
      Ansys Employee

      Shouldn't make much difference other than to the solve speed. Put the monitors in as Karthik suggests as I suspect you've got some transients in the flow. 

Viewing 3 reply threads
  • You must be logged in to reply to this topic.