Simulation of Typhoon Wind Field in Atmospheric Boundary Layer
The currently-used typhoon wind field models for wind resistance design of buildings and structures in typhoon regions often neglect the influence of temperature and assume that the central pressure difference does not vary with height above the ground.This paper first presents a refined typhoon wind field model for atmospheric boundary layer wind without this assumption and uses the decomposition method to find the solution.The refined model is then used together with the Monte Carlo simulation(MCS)and the typhoon wind decay model to predict design typhoon wind speeds and averaged wind speed profiles in Hong Kong based on 60-year typhoon wind field data recorded by the Hong Kong Observatory(HKO).Both directional and non-directional design wind speeds of 50-year return period predicted by the refined model for the Waglan Island of Hong Kong are compared with the statistical ones directly from the wind measurement data.Averaged mean wind speed profiles at the Waglan Island predicted by the refined model are also compared with field measurement data available.Finally,a numerical simulation procedure for predicting directional design typhoon wind speeds and averaged wind speed profiles for a site surrounded by complex terrain is proposed by using the refined model,the MCS method,the computational fluid dynamics(CFD)simulation and the artificial neural networks(ANN)with the Stonecutters bridge site in Hong Kong as a case study.
Refined typhoon wind field boundary layer wind simulation central pressure difference variation complex terrain MCS topographic model CFD simulation ANN design wind speed and profile comparison with measurements
Y.L.Xu W.F.Huang
Department of Civil and Environmental Engineering,The Hong Kong Polytechnic University,Hong Kong,China
国内会议
成都
英文
1-8
2013-07-29（万方平台首次上网日期，不代表论文的发表时间）