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Put a velocity profile equation on inlet – Non Newtonian fluid

- October 25, 2021 at 2:54 am
  
  nnteodosio
  Subscriber
  
  Hi guys, I'm trying to simulate a non- newtonian fluid ( Bingham model) on a pipe.
  To ensure the fully developed flow, I'm putting the velocity profile equation on inlet.
  The equation I'm ploting is : (BIRD book)
- October 25, 2021 at 3:03 am
  
  nnteodosio
  Subscriber
  
  I also tried to substitute one variable by "1" on the vel expression to find the variable creating the problem, I changed Tau_R by 1, after Mi by 1, and it goes, but Fluent always closes.
  Before it closes I can see the following messages:
- October 25, 2021 at 7:33 am
  
  DrAmine
  Ansys Employee
  
  Is that expression really using total pressure?
  Which release?
  I can imagine that this require some bit relaxation as it depends on pressure abd shear stress. Also bear in mind shear stress is not available on inlets. So how are you trying to use something non existing on the boundary,?

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