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 https://forum.ansys.com/forums/topic/using-help-with-links/#latest
You are navigating away from the AIS Discovery experience