y plus values for k-epsilon turb model

rookie75 · July 24, 2015, 09:48

Hello,
Very new to CFX and CFD in general.

Would anyone know where to find the recommended y plus values for the k-epsilon turbulence model?

Regards,
Dee

ghorrocks · July 24, 2015, 20:49

This is discussed in the CFX manuals under recommendations for flow modelling.

But it boils down to a sensitivity study. Different simulations have different requirements, so there is no universal rule.

rookie75 · July 26, 2015, 11:05

Thanks,
My results from mesh independence levelled out around 4-6% of the values i had from experimental, So i think i blundered my way to an acceptable simulation.
It's college work, so i guess i need to justify selection of mesh.

thanks ill go look up the manuals.
Dee

July 24, 2015, 09:48	y plus values for k-epsilon turb model	#1
rookie75 New Member Dee Join Date: Jul 2015 Posts: 2 Rep Power: 0	Hello, Very new to CFX and CFD in general. Would anyone know where to find the recommended y plus values for the k-epsilon turbulence model? Regards, Dee

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July 24, 2015, 20:49		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	This is discussed in the CFX manuals under recommendations for flow modelling. But it boils down to a sensitivity study. Different simulations have different requirements, so there is no universal rule.

July 26, 2015, 11:05		#3
rookie75 New Member Dee Join Date: Jul 2015 Posts: 2 Rep Power: 0	Thanks, My results from mesh independence levelled out around 4-6% of the values i had from experimental, So i think i blundered my way to an acceptable simulation. It's college work, so i guess i need to justify selection of mesh. thanks ill go look up the manuals. Dee