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intermittency factor for transitional flow over an airfoil

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Old   March 22, 2011, 20:41
Default intermittency factor for transitional flow over an airfoil
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Nick
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Hi all,

I'd like to simulate flow over an airfoil at Rey 120,000. From the literature I understand that the flow has both laminar and turbulent portions, therefore a transition model may be the most reliable option in CFX. How can I use the Gamma Theta's intermittency factor for this purpose? The documentation says it is a measure of the probability that a point lies in the turbulent region. What does this mean practically and what information do I need to set it reasonably?
I can make some prediction using XFOIL regarding the transition point. Thanks for your attention.
Nick
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