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大气边界层风速脉动的分形模拟
引用本文:刘 罡,李 昕,胡 非.大气边界层风速脉动的分形模拟[J].气候与环境研究,1998,3(3):260-265.
作者姓名:刘 罡  李 昕  胡 非
作者单位:中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室
摘    要:应用曲线分数维计算方法计算大气边界层实际风速观测资料的分数维值,并根据分形理论构造出一个理论模型来模拟真实的大气边界层风速时间序列。将模拟和真实数据的一些重要的统计特征,例如方差、风速概率分布、谱密度函数和自相关函数等,进行了比较,结果表明二者具有很好的一致性。

关 键 词:边界层  湍流  分形

Fractal Representation of Wind Speed Fluctuation in Atmospheric Boundary Layer
Liu Gang,Li Xin and Hu Fei.Fractal Representation of Wind Speed Fluctuation in Atmospheric Boundary Layer[J].Climatic and Environmental Research,1998,3(3):260-265.
Authors:Liu Gang  Li Xin and Hu Fei
Abstract:In this paper, the fractal dimensions of the observed turbulent wind speed fluctuation in atmospheric boundary layer were computed with the so-called variation method, and a fractal model was used to generate a synthetic wind speed time series based on the real data Some important statistical characteristics between the model and real observations, such as the variance, the wind speed probability distribution, the spectral density function and the autocorrelation function, were compared Excellent agreement was found
Keywords:atmospheric boundary layer    turbulence    fractals  
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