Measurements of the velocity distribution in a plane turbulent jet of air
Measurements of the velocity distribution in a plane turbulent jet of air
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平面湍流空气射流中速度分布的测量
DOI：
10.1007/bf03185052
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发表时间：
1958
影响因子：
2.4
通讯作者：
B. G. V. D. H. Zijnen
中科院分区：
文献类型：
--
作者：
B. G. V. D. H. Zijnen
本文研究了从0.5 cm × 10 cm的狭缝中以4000 cm s-1的速度喷入静止空气的平面射流和从1 cm × 25 cm的狭缝中以2000 cm s-1的速度喷入静止空气的平面射流的速度分布。在这两种情况下，雷诺数均为13300。在综述了相关理论的基础上，对其他研究者的实验进行了回顾。然后描述了实验设备和所进行的实验。从这些实验中导出了三个特征量：湍流切应力、湍流动量交换系数和混合长度。
The present paper deals with the velocity distribution across a plane jet of air issuing with a discharge velocity of 4000 cm s−1from a slit of 0.5 cm × 10 cm into still air, and across a plane jet of air issuing with a discharge velocity of 2000cms−1from a slit of 1 cm × 25 cm into still air. In both cases the Reynolds number amounted to 13 300. After a survey of the relevant theories, experiments of other investigators are reviewed. The paper then describes the experimental equipment and the experiments performed. From these experiments three characteristic quantities have been derived: the turbulent shear stress, the coefficient of turbulent momentum exchange, and the mixing length.