On the generation of full-scale urban pedestrian level wind in the wind tunnel using passive and active turbulence generators

The utilization of outdoor spaces is affected by their thermal environment. Wind, which determines the convective and evaporative heat loss from human body, one most influencing factors comfort. In prevailing comfort models, transfer coefficients were pre-measured on a manikin in wind tunnel, where speed was mostly stable. However, field measurements suggested that typical process over complex terrains, like urban landscapes, are generally non-stationary. There no experimental data how misrepresentation may affect prediction for prediction. This study simulates pedestrian-level patterns tunnel employing active passive turbulence generators. Results show scale through an gust generator approximately to two orders magnitude larger than grid system. eddy length can be adjusted rotation shutters. opens possibility performing studies measuring coefficient under unsteady conditions, similar real environments.