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-   -   Average Turbulence Intensity in LES (https://www.cfd-online.com/Forums/visualization/204487-average-turbulence-intensity-les.html)

M_Hego July 24, 2018 15:18

Average Turbulence Intensity in LES
 
Hello
I wanted to know if anyone can hint for me how to calculate the average turbulence intensity in an LES simulation. I know how to calculate the turbulence intensity for one point but I have no idea how should I calculate the turbulence intensity for a full wind field.I am calculating the turbulence intensity for a single point by getting a time series of the U component at the single position then calculate the standard deviation and the mean for this time series. THen I divide the standard deviation by the mean to get the turbulence intensity. I want to get the average for many points.
I thought averaging the velocity for more than one position together then calculate the turbulence intensity from this averaged velocity.
The main mission is to calculate the average turbulence intensity behind a wind turbine and in front of it
thank you for your help


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