An investigation of wind forces on three-dimensional roughness elements in a simulated atmospheric boundary layer flow< Part 3: The effect of central model height variations relative to the surrounding roughness arrays.

Reports a systematic investigation of the wind pressure variations when test models of varying height are surrounded by uniform roughness arrays of various densities in a boundary layer wind tunnel. Describes the effect of the surrounding roughness in shielding the bluff model when the model height is less than the average roughness height and of the degree of exposure experienced by a model taller than the surrounding roughness. Discusses results and gives 24 graphs of pressure coefficients.