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“Warning: cannot modify NASA9 piecewise polynomials for air.”

- September 25, 2024 at 7:03 pm
  
  jal139
  Subscriber
  
  When I attempt to use the two-temperature model, I encounter the following warning (see the attached image):
  "Warning: cannot modify NASA9 piecewise polynomials for air."
  Could anyone please advise on how to address this warning?
- October 8, 2024 at 1:27 pm
  
  Essence
  Ansys Employee
  
  Hello,
  Which version are you using? Ensure you have 2T model as well as cfd_hsf license to run the hypersonic cases. Did you try to change the coefficients of NASA 9-coeffs?
- January 30, 2026 at 9:04 am
  
  022120216
  Subscriber
  
  Hello, I encountered the same issue while setting up in Fluent 2022R1.
  - January 30, 2026 at 11:01 am
    
    Essence
    Ansys Employee
    
    Hello,
    Could you please open a new Forum thread? We would be happy to help you out there. Thanks.

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