k-w SST with or without Low Re Correction?

orion · February 22, 2012, 13:00

Hi Guys,

I am simulating an airfoil with reynolds numbers between 200,000 and 900,000 using the k-omega SST model and was wondering if I should be using the low Re correction option? When I turn it on, there seems to be separation bubbles that get closer to the leading edge as the Re increases, although when compared with Xfoil it predicts the bubbles a lot closer to the trailing edge. When the low Re correction is off, there don't appear to be any separation bubbles at all.

Any help would be much appreciated!

Thanks,

Orion

vangelis · September 26, 2012, 09:18

I would also like to know this.
Low-Reynolds correction in k-omega refers to the reference Reynolds number of the problem or the boundary layer grid resolution?

If it refers to the reference Reynolds, then what is considered as Low?

February 22, 2012, 13:00	k-w SST with or without Low Re Correction?	#1
orion New Member Orion Modebe Join Date: Oct 2011 Posts: 4 Rep Power: 14	Hi Guys, I am simulating an airfoil with reynolds numbers between 200,000 and 900,000 using the k-omega SST model and was wondering if I should be using the low Re correction option? When I turn it on, there seems to be separation bubbles that get closer to the leading edge as the Re increases, although when compared with Xfoil it predicts the bubbles a lot closer to the trailing edge. When the low Re correction is off, there don't appear to be any separation bubbles at all. Any help would be much appreciated! Thanks, Orion Last edited by orion; February 22, 2012 at 19:07.

September 26, 2012, 09:18		#2
vangelis Senior Member Vangelis Skaperdas Join Date: Mar 2009 Location: Thessaloniki, Greece Posts: 287 Rep Power: 21	I would also like to know this. Low-Reynolds correction in k-omega refers to the reference Reynolds number of the problem or the boundary layer grid resolution? If it refers to the reference Reynolds, then what is considered as Low? AlexRonto likes this.

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