ESDU 86010:1991 PDF Download

The ESDU 86010:1991 standard is part of a group of standards that provide comprehensive information on atmospheric turbulence characteristics. This specific standard focuses on the relationship between turbulence velocity components measured at two different points in space. It covers various aspects of turbulence such as joint-probability, cross-correlations, coherence, phase angle, and integral length scales.

The standard applies to the entire atmospheric boundary layer and takes into account different types of terrain. It utilizes the von Karman equations, which have been modified to incorporate the distorting effects near the ground. This modification allows for anisotropic effects to be considered. The data provided in the standard can be used to extrapolate measurements made at moderate wind speeds to higher design speed cases, where longer length scales are obtained.