UDF for Transirion SST model

sifou · December 21, 2011, 11:01

Hi,

When using th Transition SST turbulence model, it is possible to introduce, in the form of UDF, new correlations (user correlations) for Re_theta, Flength and Re_theta_c .

The two last correlations are function of the local transition Re_theta_tild, obtained from a transport equation.

I need to know how to access the values of this parameter (Re_theta_tild).

Thanks.

killsecond · June 29, 2015, 03:56

Quote:

Originally Posted by sifou

Hi,

When using th Transition SST turbulence model, it is possible to introduce, in the form of UDF, new correlations (user correlations) for Re_theta, Flength and Re_theta_c .

The two last correlations are function of the local transition Re_theta_tild, obtained from a transport equation.

I need to know how to access the values of this parameter (Re_theta_tild).

Thanks.

I have the same problem, have you solved it?

kam96 · April 28, 2024, 09:04

Same problem over here and I'll be glad if any of you guys have found any solution for this, the only probable solution that I've found is to define the two retheta and intermittency equations as UDS but it's probably not that efficient.

December 21, 2011, 11:01	UDF for Transirion SST model	#1
sifou New Member H.A Join Date: Oct 2011 Posts: 4 Rep Power: 15	Hi, When using th Transition SST turbulence model, it is possible to introduce, in the form of UDF, new correlations (user correlations) for Re_theta, Flength and Re_theta_c . The two last correlations are function of the local transition Re_theta_tild, obtained from a transport equation. I need to know how to access the values of this parameter (Re_theta_tild). Thanks.

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April 28, 2024, 09:04		#3
kam96 New Member Kamyar Join Date: Dec 2018 Posts: 6 Rep Power: 8	Same problem over here and I'll be glad if any of you guys have found any solution for this, the only probable solution that I've found is to define the two retheta and intermittency equations as UDS but it's probably not that efficient.