A Comparative Analysis of Pedestrian Wind Environment for the Building Wind around High-Rise Buildings in Low-Rise Building Group through Wind Tunnel Test and Computational Fluid Dynamics

Wind tunnel experiments and CFD were conducted to evaluate the pedestrian wind environment for strong winds generated around the building when a large high-rise building was built in the center of a low-rise building group among various types of urban areas. In order to verify the results of the wind tunnel test in this paper, it was compared and verified with the verified wind tunnel test results provided by the Architectural Institute of Japan(AIJ). As a result of the comparison, the correlation coefficient was distributed at 0.84-0.91, which was very similar to each other. CFD corrected wind velocity through turbulence energy and compared it with wind tunnel test results through the RNG k-ε model. The evaluation of pedestrian wind environment was conducted using Murakmi and Lawson's criteria. The correlation coefficient of the exceedance probability for each measurement point according to the wind speed ratio of the wind tunnel experiment and the computational fluid analysis was 0.9 or more, confirming a very high correlation. In addition, Murakmi and Lawson wind environment evaluation results showed almost the same trend, although there were differences in evaluation time.