Fluids

Fluids

Why isn’t my fluid transferring from one container to the other?

    • liamjones32
      Subscriber

      I have a 2D section of a circular enclosure with a circular container (with a dished end at the top) in the middle full of water. The circular container empties into the enclosure through the two orifices at the bottom. The water must travel against gravity over a boundary before it reaches the surrounding enclosure. This is shown in the image below.

    • Rob
      Ansys Employee
      I can see a line in the mesh, what is it? I'm also wondering what the inlet/outlet are doing there, the arrows are a hint.
      As an aside, in 2d don't pick any surfaces when you plot contours.
    • liamjones32
      Subscriber
      So I've not set any inlets in this simulation. I followed a tutorial which said to put the top of the circular container as an outlet, ensuring that the volume backflow fraction is 0.
      Do the arrows indicate the direction of flow out of the outlets?
      The line in the mesh represents the wall of the circular enclosure, not sure if this needs to be included?
      This is how I want the fluid to flow out of the two bottom orifices FYI.
      Thanks for your help!
    • Rob
      Ansys Employee
      The arrows are a graphical indicator for inlets and outlets. The top of the whole domain would (probably) be a pressure boundary, backflow as you correctly say is no liquid. The tank bit wants to be wall (and wall:shadow) with interiors where the flow leaks out. I suspect you've either not shared topology or have labelled something as inlet/outlet which has overwritten the boundary types. Note, in 2d you're modelling a 1m thick domain. If it's a round tank you might want to review the axi-symmetric approach.
    • liamjones32
      Subscriber
      Great thanks for your help!
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