Learning Forum

[Mepal]

Hello,

 

I am going to activate a chemical reaction in Fluent. However, I am curious about the choice I should use.

1.      When I learned a tutorial from youtube, there was a "non-explicit source" option. But my version, 2022R2, has a "non-direct source" option.

   

Does "non-explicit source" is "non-direct source"?

 

2.      According to Ansys Fluent User's Guide 2022R2 page 2249, I am confused about this phrase "If you want to make explicit use of chemistry source terms in the species transport equations, without a stiff-chemistry solver, select None - Direct Source."

Could you please explain the meaning of "use of chemistry source terms in the species transport equations"?

Does chemistry source terms is the parameters we set in a reaction (below picture)?

3.      What is the difference between "None - Direct Source" and "Stiff Chemistry Solver"?

Please advise.

Best,

[Essence]

Hi,

Please refer to the user's manual provided: 46.4. Models Task Page (ansys.com)

If you are unable to access the link, follow this Forum discussion /forum/forums/topic/using-help-with-links/#latest