关于湍流多尺度统计理论方法的论证

用黑河化音测站的实测风、温脉动资料对一种湍流多尺度统计理论方法进行了分析验证,并应用此方法通过对相关系数、湍流时间尺度、湍谱和扩散参数等湍流特征量的研究,分析了黑河戈壁地区的湍流微结构和扩散特征.结果表明:多尺度分析方法正适合研究具有多尺度特征的大气湍流现象,可以比传统方法提供更多的有关湍流属性的信息,能够更直观地表现出不同尺度湍涡对扩散作用的大小,是发展湍流统计理论的一种有效工具

ON VALIDATION OF TURBULENCE MULTISCALE STATISTICAL THEORY METHOD

In this paper, turbulence multi scale statistical theory method is analyzed and proved with observational data of turbulent velocity, temperature fluctuation in HEIFE (Huayin site). Furthermore, we use this method to analyze the microstructure of turbulence and diffusion characteristics in Gebi of Heife through by turbulent characteristic vectors, such as: correlation coefficient, turbulent time scale, turbulence spectrum and diffusion coefficient. The results show that this method which can give more information about turbulent characteristics than traditional method, is appropriate to investigate atmospheric turbulent phenomenon with multi scale characteristics, and is more intuitive to show that different scale eddies play different roles in turbulent diffusion. It shows that multi scale method is an effective tool to develop the traditional turbulent theory.