Studies on 1:300 Scale Wind Tunnel Simulation of Atmospheric Boundary Layer Characteristics Under Open Terrain Conditions Using a State-of-the-Art Boundary Layer Wind Tunnel

Physical simulation of atmospheric boundary layer characteristics is very important for wind tunnel testing of models on buildings and structures. A 1:300 scale flow simulation under open terrain conditions was conducted satisfactorily, in the recently established state-of-the-art boundary layer wind tunnel at JUET Guna, Madhya Pradesh, India. The size of the test section is 3.5 m (W) × 3.0 m (H) × 22 m (L). Using a combination of a trip board and floor roughness cubes, profiles of mean velocity, turbulence intensity and spectrum of wind speed were measured and compared with values recommended in the literature, including IS code and ESDU guidelines. The power law coefficient of the mean velocity was 0.16 and the value of turbulence intensity at 600 mm model height was 0.11. The measured spectra of wind speeds at different heights in model showed a good comparison with von Karman power spectrum to a scale of 1:300.