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《Environmental Science and Management》 2010-10
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A Analysis of the Law of the Frequencies of Wind and the Fitting of the Tower-Layer Wind Speed of the Meteorological Tower of the Jiyang Nuclear Power Plant

Li Jing,Li Bin(College of Chemical Technology and Environment,North University of China,Taiyuan 030051,China)  
Base on the observations data from the meteorological tower of the Jiyang nuclear power plant in AnHui,the law of the frequencies of wind is analysed,and the Tower-layer wind speed is fitting approximation power function by the south and north along the river flow,and finally calculate the surface roughness.Results showed that the dominant wind direction is north-easterly,and the frequency is high,and the sub-dominant wind direction is slightly different;the Tower-layer wind profile generally consistent with the power function,and the n index of recommended values which are calculated by the profiles:the class A is 0.165,the B is 0.167,the C is 0.192,the D is 0.313,the E is 0.406,and the F is 0.463;the surface roughness of the south along the river flow is 1.547063 m,and the surface roughness of the north along the river flow is 1.738 45 m.
【CateGory Index】: TM623;P412.16
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