Species Conservation – Mass/Molar fraction vs Concentration

- April 25, 2023 at 2:42 pm
  
  Diogo Martinho
  Subscriber
  
  Hey all,
  
  I was modelling the species conservation equation through the use of UDS - each scalar would be the molar concentration of the species i. I don't know if it is a problem but I am not really understanding how can I ensure the mass conservation of species due to:
  
  * First, all the species have source terms (generated or consumed)
  * Since the scalars are molar concentrations is a bit tricky to have the same approach as """ Background species """ (which I dont really have) molar fraction.
  
  I hope this makes sense and you can help me
  
  Kind regards,
  
  Diogo
- April 27, 2023 at 3:31 am
  
  Essence
  Ansys Employee
  
  Hi,
  Are you referring to cold flow or reacting flow? Which turbulence model you are using? Which combustion model you are using? Please elaborate further.

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