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Density based solver diverging near walls

    • Ashwin Subramanian Murugan
      Hello all, The inlet of my geometry has a supersonic nozzle. I am trying to simulate flow through it in steady state initially and then later in 
      unsteady conditions.
      With the density based solver I was able to get a steady state solution. When I started to run the transient solution , my results start diverging near the wall. Without the inflation layers, it is not diverging.
      However, when I use the pressure based solver  I am able to get really good results with inflation layers as well. I want to recreate the results using density based solver as Mach number in my flow exceeds 3.
      Please let me know how to fix this issue.
      I will attach pictures

      Solver settings for steady state simulation

      Courant no - 5
      when I start the transient sim, after some iterations: (timestep 1e-6 s)

      1. How do I prevent this from diverging as shown above in transient sim?

    • Rob
      Forum Moderator

      Duplicate https://forum.ansys.com/forums/topic/diverging-results-with-density-based-solver-2/

    • Ashwin Subramanian Murugan

      Hello, can anyone please help me with this problem?

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