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Forum: CFX

October 11, 2009, 06:24

Replies: 8

Y+ question

Views: 2,444

Posted By ghorrocks

I assume for supersonic flows you are not...

I assume for supersonic flows you are not interested in turbulence transition and suck things. In fact I don't think the CFX turbulence transition model is calibrated for supersonic flows anyway so I...

Forum: CFX

June 9, 2009, 07:57

Replies: 8

Y+ question

Views: 2,444

Posted By ghorrocks

Hi, You are unlikely to do much better than...

Hi,

You are unlikely to do much better than SST with the turbulence transition model for aerofoil flows unless you start looking towards DES or LES. If a simple two-equation turbulence model does...

Forum: CFX

June 8, 2009, 18:53

Replies: 8

Y+ question

Views: 2,444

Posted By ghorrocks

Hi, The journal article should have some...

Hi,

The journal article should have some form of error estimate. My understanding is the wake survey method is not very accurate but people more experienced in the field may have more detailed...

Forum: CFX

June 8, 2009, 06:45

Replies: 8

Y+ question

Views: 2,444

Posted By ghorrocks

Hi, Is turbulent transition important? Often...

Hi,

Is turbulent transition important? Often for accurate drag numbers it is. This model requires the use of a Y+=1 grid as you can't use wall functions with that model.

There is also a heap of...

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