Observation and Experiment Research on the Wind Speed Profile in Inner Mongolia Grassland Surface Layer
(0) In order to provide initial wind speed profile for the numerical simulation of computational fluid dynamics(CFD)in complex terrain wind farm,in this paper,the atmospheric turbulence observational data from l00m meteorological tower during 2009 and 2010 in Inner Mongolia offered by National Climate Center is used,the variation characteristics of wind speed profile under different stability conditions is analyzed,and the wind profile expression based on the local similarity theory is successfully established.Results show that:(1)In the surface layer of atmosphere on Inner Mongolia grassland,the probability of unstable stratification and stable stratification occurs much higher than the stratification of neutral and light instable and light stable.(2)Under stable stratification,the characteristics of atmosphere change obviously in the vertical direction which needs to consider as different level respectively.According to atmospheric turbulence observation experiment data,under stable stratification,the relationship between the dimensionless wind speed gradient and the stability parameter ζ can be expressed as 1+βm,and βm changes with height: βm takes 4.3-5.4 at 30m height; βm 2.9-3.4 between 30m-50m; βm 2.0-2.9 0ver 50m.
Wind Speed profile Atmospheric stability Similarity theory Monin-Obukhov length Dimensionless wind speed gradient
Zhu Rong Gong Xi Li Zechun Ma Wentong
National Climate Center,Beijing 100081,China National Meteorological Center,Beijing 100081,China
国际会议
The 13th World Wind Energy Conference(WWEC2014)(第十三届世界风能大会)
上海
英文
1-17,104
2014-04-17（万方平台首次上网日期，不代表论文的发表时间）