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January 24, 2024 at 2:32 pm
Reno Genest
Ansys Employee
Hello Atish,
Yes, the default units for activation energy is cal/mol and I would say mol-cm-s-K is correct fo preexponential factor. Here is more information from the developer:
"The chemkin data units are restricted as described next:
- CGS is required
- The rate constants are expressed in cm^3/mol.s for bimolecular reactions and in s^(-1) for unimolecular reactions.
- The energy unit is erg for internal energies, enthalpies, entropies, free energies, and heat capacities.
- For activation energies, the default unit is cal/mol; however, the user can choose another unit for the activation energies by including a supplementary key word as JOULE/MOLE after the key work REACTION to switch to use J/mol as the unit for activation energies."
Reno.