A Computer-Controlled Wind Tunnel

Abstract Many types of meteolorogical, environmental and boundary layer wind tunnels have been constructed to simulate atmospheric phenomena on buildings, structures and transport of air pollutants. New types of 2 and 3-dimensional wind tunnels have been constructed in our laboratory, which has multi-fans controlled by a computer. To simulate the required wind structure in the wind tunnel, each fan is controlled independently to pile up turbulence characteristics on mean wind velocity profiles.