Fluids

Fluids

CFD Analysis over 3D diverter

Tagged: 

    • jjyy555
      Subscriber

      Hey everyone,

      Good day, I am conducting an analysis with the intend of finding the velocity of flow over a diverter from a nozzle, but I could not seem to set the boundary conditions as intended.

      I have attached a 3D file that I used.

      I would appreciate any feedback and advice provided.

      Thanks.

    • DrAmine
      Ansys Employee
      Can you highlight inflow and all other boundaries used? (PS: Ansys Stuff do not look into attachments)n
    • jjyy555
      Subscriber
      Hey DrAmine,nso far I have set the inlet and outlet, with inlet gauge pressure of 68 Bar and 0 m/s.nI wanted the plot a velocity pathline as affected by the diverter but could not seem to generate any movement within the flow.nn
    • Rob
      Ansys Employee
      Try adding a velocity to the inlet: you set 0m/s?n
    • jjyy555
      Subscriber
      Hey Rob, yes I have tried changing the inlet velocity as well but to no avail.n
    • Rob
      Ansys Employee
      Can you check the inlet is actually attached to the domain. Carefully looking at your boundary conditions I can't see an inlet; I can see several mesh interfaces so I wonder if your inlet isn't actually doing anything. n
    • jjyy555
      Subscriber
      I assigned the wall at that location to be the inlet, don't suppose that interface is connected to the domain?nIf possible, can I trouble you with a ZOOM chat on Monday?n
    • Rob
      Ansys Employee
      We're only able to communicate via the Forum: this protects us from US Export Law. nIf you have an interface there I think you're adding material into a different part of the domain. Go back to the CAD and use Share Topology (SpaceClaim) or create a Multibody part (DesignModeler) and it may be easier to set up. n
    • jjyy555
      Subscriber
      Alright, will try. Many thanks.nJust a note, I initially designed the components in Autodesk Inventor then exported the file as a .igs file.n
    • Rob
      Ansys Employee
      That's fine, you can still do share topo and the like in the Ansys geometry tools. We often use CAD from third party software for projects. Try using Step format, IGES is notorious for being awful. n
    • jjyy555
      Subscriber
      Thanks for heads up, I did not change anything but a wall went missing and I just reassigned the inlet and finally got a plot of some kind.nI am currently using pathline and it does not let me run it frame by frame to look at the movement, is there a way to add pathlines to scenes?nnn
    • Rob
      Ansys Employee
      If you create a New pathline you can add it to the objects as normal. You can't make them transparent though. Skip is a goo option to give more clarity, along with colour by particle time. nThere isn't much you can do with pathlines as they just create the lines. Have a look at mass less particles and the Particle Track option Pulse. n
    • jjyy555
      Subscriber
      Thanks Rob, I think I got most of what I need.nCheers.n
Viewing 12 reply threads
  • You must be logged in to reply to this topic.