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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Residuals oscilalting using the species transport model › Reply To: Residuals oscilalting using the species transport model

July 11, 2023 at 3:21 am
Essence
Ansys Employee

Hello,

Which combustion model are you using in the Species Transport? You need to use EDM for one-step methane+air reaction. I also see that mesh is not fine enough at the region where the reaction takes place. Please improve the mesh. The mole fraction of oxygen is 0.4, which should be 0.21 logically. How did you calculate the Turbulent Intensity? 17% is a bit high value.

Please refer to the tutorial:

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v211/en/flu_tg/flu_tg_magnus.html

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