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-   -   How to calculate the Turbulence Itensity in LES (https://www.cfd-online.com/Forums/fluent/36191-how-calculate-turbulence-itensity-les.html)

Jiang Ning March 29, 2005 05:03

How to calculate the Turbulence Itensity in LES
 
I am now using the fluent LES model to simulate a trasition problem. Can someone told me how to calculate the Turbulence Itensity and other parameters with the result that get from fluent LES model ? Now all these parameters is empty.

Chetan Kadakia April 4, 2005 13:28

Re: How to calculate the Turbulence Itensity in LE
 
Fluent will calculate it for you. You can either view the data through contours, monitor through a surface monitor, or just go to report values for an average.

pUl| April 13, 2005 13:52

Re: How to calculate the Turbulence Itensity in LE
 
A quick note here:

By Default the method used for calculating the Turbulence Intensity in the panels is not accurate. This is already documented. Fluent uses a constant velocity as specified under Report -> Reference values.

It is considered more instructive to use sqrt(2*k_phase/3) / |v_phase| in a custom field function and then obtain your Turbulence Intensity values from there.


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