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Limit range of the pre-exponential factor! [Volumetric reaction/Species transport]

- July 1, 2021 at 3:32 pm
  
  KhoangKyong_NGUEN
  Subscriber
  
  Hello,
  I am doing the chemical reaction model. I have Pre-exponential factor ( 1.36e+43 1/s ) and Activation energy (312000 J/mol) for my reaction. But when I put these values, Ansys says that the maximum Pre-exponential factor is 1e+38 only. (Pictures below)
- July 21, 2021 at 3:37 pm
  
  RK
  Ansys Employee
  
  Hello This is not a limitation, this the range in which the pre-exponential parameter is defined.
- July 21, 2021 at 3:44 pm
  
  KhoangKyong_NGUEN
  Subscriber
  
  Wonderful. Thank you very much! You just said what I already knew.
  I can repeat my question if you want. My question is How to fix this problem? How I can put my value in here?
- July 23, 2021 at 10:57 am
  
  Rob
  Forum Moderator
  
  You can't, it's outside the permitted range for the solver.
  It may be possible with a UDF based reaction, but I'd be questioning why the factor was so high.

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