An experimental investigation of coaxial turbulent jets
An experimental investigation of coaxial turbulent jets
复制标题
同轴湍流射流的实验研究
DOI：
10.1016/0017-9310(71)90191-8
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发表时间：
1971
影响因子：
5.2
通讯作者：
I.J Wygnanski
中科院分区：
文献类型：
--
作者：
F.H Champagne;I.J Wygnanski
利用热线风速仪对同轴双射流产生的流场进行了实验研究。改变外部和内部喷嘴之间的面积比以及从每个喷嘴发出的速度。的平均速度，湍流强度和剪切应力的分布，确定了各种情况下。发展的流场和它的方法的自我保护状态进行了讨论。基于喷嘴直径的雷诺数从0到10s变化，并且速度足够低，可以认为流动是不可压缩的。
The flow field generated by two coaxial jets was investigated experimentally with hot-wire anemometers. The area ratio between the external and internal nozzle was varied as well as the velocity issuing from each of the nozzles. The distribution of the mean velocities, turbulence intensities, and shear stresses were determined for the various cases. The development of the flow field and its approach to a self-preserving state is discussed. The Reynolds numbers based on the nozzle diameters varied from 0 to 10s and the velocities were low enough that the flow can be considered incompressible.