FLUENT uds units

- July 8, 2019 at 3:14 am
  
  xqzhang
  Subscriber
  
  hello, everyone. I am building a pem fuel cells model, and I have a question. When I write uds, if I use mol*m-3*s-1 as the unit, the calculation is normal, but when I change teh unit to kmol*m-3*s-1, the calculation result is wrong. If I want to use kmol*m-3*s-1 as the unit of source term of UDS, do I need to change the default unit or others in FLUENT? Besides, does change the unit of source term speed up the convergence?
- July 10, 2019 at 4:05 pm
  
  Rob
  Ansys Employee
  
  Changing the units shouldn't effect convergence as the actual numbers used in the solver are converted to SI.
- July 11, 2019 at 1:00 am
  
  xqzhang
  Subscriber
  
  Thank you very much for your answer.

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