Urgent Help needed KwSST y+=1

tomcat · June 24, 2010, 16:18

Hi,

I am urgently in need of assistance to get my 2D blade running in Fluent. I have easily managed to get convergence with a higher value of Y+ , but I am required to use a Y+= 0.5 or Y=1 maximum, because of the KWSST. im using a tripave mesh same as before and the first row is 0.0021mm in Gambit.
can anyone tell me why im not getting even when I've lowered the under relaxation factors (all of them).

Thank you in advance

thecfduser · June 29, 2010, 22:39

Hi
i want to help u, but i am not sure that i understood ure problem:

u did a first simulation, u have see that ure y+ is bad , so u refined the mesh and u did another simulation, and u get a bad y+ too????

what does the under-relaxation factor have to do with all this?

June 24, 2010, 16:18	Urgent Help needed KwSST y+=1	#1
tomcat New Member moe Join Date: Jun 2010 Posts: 1 Rep Power: 0	Hi, I am urgently in need of assistance to get my 2D blade running in Fluent. I have easily managed to get convergence with a higher value of Y+ , but I am required to use a Y+= 0.5 or Y=1 maximum, because of the KWSST. im using a tripave mesh same as before and the first row is 0.0021mm in Gambit. can anyone tell me why im not getting even when I've lowered the under relaxation factors (all of them). Thank you in advance

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June 29, 2010, 22:39		#2
thecfduser Senior Member karine Join Date: Nov 2009 Posts: 158 Rep Power: 17	Hi i want to help u, but i am not sure that i understood ure problem: u did a first simulation, u have see that ure y+ is bad , so u refined the mesh and u did another simulation, and u get a bad y+ too???? what does the under-relaxation factor have to do with all this?