Uncertainty in the estimation for the wind pressure　coefficient on the building surface associated with the atmospheric stability

摘要

We conducted observations of wind velocity profiles for ten months above a high-density area in Tokyo, Japan, using a Doppler LIDAR system. Obtained data of the exponent index displayed diurnal variation, decreasing in the daytime, which is expected in unstable atmospheric conditions. This paper provides information on the uncertainty in the calculated ventilation airflow rate due to the use of a constant value for the exponent index. The study is performed using data on wind pressure coefficients obtained from a numerical parametric study using computational fluid dynamics based on observation data.