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Temperature and Viscosity Limited

    • Keith Sequeira
      Subscriber

      I am simulating jet blast in a domain 200m wide and tall , 500m in length. My mesh quality in terms of orthogonality and skweness are great. When i run the k-epsilon model i get temperautre and turbulence viscosity limited before continuity starts to diverge and i get a floating point error.

      My model is essentially is a cylinder with the inlet at the far end. A domainis built around the cylinder with the dimensions mentioned about. The downstream wall of the domian is a pressure outlet, the left right and top walls are symmetry while the upstream end of the domain is a pressure outlet ( to represend the atmosphere )

       Flow of ari from the image is from the end of the pipes to the downstream wall on the right.

       

      I have a boundary layer on the lower wall of the domain with a y+ 35 because i am investigating RANS turbulence models. I am not sure on what to do at this point because all my bondary conditions are corrct to my knowledge. Any and all help will be appreciated !

    • Rob
      Forum Moderator

      Please post some images of the flow field.

      What is the fluid density model? Ie constant, ideal gas etc. 

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