ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
The Study on Wind Speed Change with Height Under Different Terrain Conditions in Hubei Province
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Abstract:
The vertical wind shear characteristics under the different terrain conditions are explored by using the observed data of whole year in Longganhu of Huanggang, Xianjuding of Dawu and Huashanguan of Zhongxiang, and the change characteristics such as daily and seasonal variations are analyzed with methods of linear analysis and leastsquares fitting. The results showed that， the variability of wind speed in Huashanguan is the biggest as the sea level increases, and followed by Longganhu, and the smallest is Xianjuding. Moreover, the trends in wind shear index are different with increasing heights, the curve of daily change is near the sinusoidal waveform; the seasonal variations in different terrain conditions are shown obviously. Compared with the normal circumstances, the vertical wind shear index is significantly reduced in windy conditions. Finally, a conclusion may be drawn that there is a significant impact of terrain and the underlying surface on the vertical change of wind.
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