戈壁地区湍流能量耗散率和温度脉动耗散率的分析

A STUDY OF DISSIPATION RATES OF THE TURBULENT KINETIC ENERGY AND TEMPERATURE VARIANCE IN THE GOBI DESERT REGION

本文在分析戈壁地区湍流能谱特征的基础上,利用惯性副区有关规律,对湍流能量耗散率ε和温度脉动耗散率N作了初步研究,得到无因次湍流能量耗散率(?)_E为 无因次温度脉动耗散率(?)_N为 文中讨论了能量收支方程和温度方差收支方程,并用得到的(?)_E和(?)_N关系估算了近地面层的速度和温度特征尺度M和T,与涡旋相关方法得到结果比较,一致性较好。

In the paper, turbulent energy dissipation rate e and temperature variance disssipation rate N have been analysed by using turbulent energy spectrum theory in inertial subrange in the Gobi desert region. The dimensionless dissipation rates of turbulent energy(ε) and temperature variance (N) areThe turbulent kinetic energy budget and temperature variance budget are discussed. Mean while, the scaling parameter u and T in surface layer are calculated by the spec-tral density dissipation technique and compared with the result of eddy-correlation method, both of them are in good agreement.