Wind-tunnel measurements in the wakes of structures

Abstract

Detailed measurements of longitudinal mean velocity, turbulence intensity, space correlations, and spectra were made in the wake of two rectangular scaled models in simulated atmospheric boundary-layer winds.The model buildings were 1:50 scale models of two trailers for which corresponding field measurements are being made at the NASA, George C. Marshall Space Flight Center.Results of a flow visualization study of the wake geometry were analyzed with some singular point theorems.Two hypothetical flow patterns of the detailed wake geometry were proposed.Some preliminary studies of the vortex wake, effects of the model size, model aspect ratios, and boundary layer characteristics on the decay rate and extent of the wake were also presented and discussed.