set up an requirement for site fractions on Chemkin Pro 2022

- March 18, 2024 at 8:22 pm
  
  Mikyung Hwang
  Subscriber
  
  Hi,
  Could someone let me know how to set up a requirement that all surface site fractions, Zk, sum to one (i.e., SUM(Zk)=1)?
- April 4, 2024 at 7:15 pm
  
  jcooper
  Ansys Employee
  
  Hi Mikjung:
  This type of requirement should be unnecessary. If initial guess species or site fractions do not sum to 1.0,they are usually normalized. During solution, a unity sim is enforced by solving one species as 1-others.
  
  Best Regards,
  
  Judy