A dimensionless parameter that is often used as a measure of the turbulence intensity (I) is given by: I = sU / M (7) where M is the three-dimensional wind field.

How do you calculate wind turbulence intensity?

In the wind energy industry, turbulence is quantified with a metric called turbulence intensity – the standard deviation of the horizontal wind speed divided by the average wind speed over some time period, typically 10 minutes. If the wind fluctuates rapidly, then the turbulence intensity will be high.

How is turbulence intensity set?

For specific case like flow through pipe, turbulence intensity (%) can be specified as I = 0.16Re^(-1/8) while the corresponding length scale can be specified by hydraulic diameter of pipe.