【摘要】 本文利用超声脉动风速仪和白金丝脉动温度仪,分别测量了三维风速u、v、w和温度T的瞬时脉动值.根据这些风、温高频测量值,用几种不同的计算方法计算了湍流能量和动量、热量通量.计算结果表明,由于大气中湍涡尺度很宽,对于不同尺度的湍流量,选用合理的计算方法,能够得到正确的计算结果,并节省计算时间.更多还原

【Abstract】 The fluctuation values of three-dimensional wind u, v, w and temperature T are respectively measured by using the sonic’ anemometers and the platinum wire thermometers, mounted on the 325 m meteorological tower. Three sorts of different methods for calculating the turbulent energy and the turbulent fluxes of heat and momentum are introduced. The results of calculations indicate that the reasonable methods of calculation selected for the turbulent scales of different vortices are very important, because the scales of turbulent vortices in the atmosphere exist in a wide range. In this way we can obtain the exact results and save time for calculations.更多还原