Simulation of downburst wind field with spatial correlation
ZHANG Wen-fu, XIE Dan, LIU Ying-chun, JI Jing
1. College of Civil and Architecture Engineering, Northeast Petroleum University School, Daqing, 163318, China2. Heilongjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering, Daqing 163318, China
Abstract：Considering the time decay, the relationship between downburst average wind speed and space observation point location is studied, and average wind speed distribution of 4 spatial points is given. Based on Deterministic–Stochastic Hybrid model, average wind speed samples of 7 spatial points are simulated by Wood vertical wind profile model and Holmes horizontal radial wind profile model, and fluctuating wind speed samples with time correlation and spatial correlation are obtained by AR model, then downburst wind field with spatial correlation is obtained. Numerical results of the comparisons of correlation function and PSD indicate that the proposed method is of highly precision.
2013, Vol. 32 
