Correlation of Simultaneously Measured Droplet Sizes and Velocities in nozzle sprays
Correlation of Simultaneously Measured Droplet Sizes and Velocities in nozzle sprays
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同时测量的喷嘴喷雾中液滴尺寸和速度的相关性
DOI：
10.1002/ppsc.19840010119
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
H. Floegel
中科院分区：
文献类型：
--
作者：
K. Bauckhage;H. Floegel
本文介绍了一种新的激光多普勒测速法，它能同时测量扇形喷嘴喷雾锥内小水滴的尺寸和速度。由于响应于来自条纹模式LDA的信号的相邻光电倍增管之间的相位差与测量体积中的球形颗粒的直径成线性比例，因此对于喷雾中的光学装置和测量体积之间的长距离，非侵入性测量，并从这些测量中得到单个液滴的尺寸和速度的相关性，以便建立二维分布。从新的LDA仪器中，人们可以获得有关封闭流动情况下测量点的体积流量浓度的确切信息。
The application of a new LDA method which simultaneously measures the size and velocity of small water droplets in the spray cone of a fan type water nozzle is described. As the phase difference between adjacent photomultipliers responding to signals from a fringe mode LDA is linearly proportional to the diameter of the spherical particle in the measuring volume, the new instrument allows, for long distances between the optical devices and the measuring volume in the spray, non-invasive measurements and from these the correlation of size and velocity of the individual droplet in order to establish two-dimensional distributions. From the new LDA instrument one receives definite information about the volume-flow concentration in the measuring point of an enclosed flow situation.