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Calculation of Turbulence Intensity on SDR wind rose report

Turbulence intensity (Ti)is defined as the windspeed interval standard deviation (SD) divided by the windspeed interval average (AVG)...


On the windrose, the samples are first sorted by direction into sectors. In each sector, there will be "n" samples. A Ti is calculated for each sample and an average Ti is then created for the sector...

WindRose Ti for each sector = (SD/AVG + SD/AVG + SD/AVG...n)/n

Note that SDR defaults to 16 sectors for a standard windrose.


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