3D axisymmetric flow domain

- January 26, 2021 at 5:16 pm
  
  mesakca
  Subscriber
  
  I am trying to simulate an axisymmetric flow in a bubble column.nCurrently i have a cylindrical domain where gas is introduced from bottom (sparger covers whole bottom diameter) in vertical direction which is set as Z axis. My inlet bc is mass flow inlet and flow direction is normal to boundary. My outlet bc is degassing outlet.nIs this enough to represent axisymmetric pattern of flow, should i add any other (radial, tangential?) components of flow or fix something else?nThank you for your answers.nn
- January 27, 2021 at 11:27 am
  
  Rob
  Ansys Employee
  
  If the model is axi-symmetric there is no z-direction. The axis aligns with y=0 and y must be greater or equal to zero. nIn the 2d-axi case you would only add swirl if there is any in the real case. That's fairly rare in columns as you're aiming for a uniform gas distribution to maximise the contact area. n
- January 27, 2021 at 12:09 pm
  
  mesakca
  Subscriber
  
  Thank you Rob. I understood.n

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