Abstract

Extensive power spectral and correlation measurements have been made in a simulated neutral atmospheric boundary layer in a wind tunnel. These measurements verify the existing data by showing that the flow in the simulated boundary layer is reasonably representative of real boundary layer flow. Comparison with the available full scale data shows good agreement provided that the height of the atmospheric boundary layer appropriate to rural terrain, which is the type represented here, is assumed to be of the order of 2000ft. Normally a height of 1000ft is adopted. It is also shown that measurement of the integral length scales of turbulence may provide a more accurate method of estimating the atmospheric boundary layer height.

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