Study of disturbance wave development in downwards annular flows with a moving frame-of-reference brightness-based laser-induced fluorescence method
Study of disturbance wave development in downwards annular flows with a moving frame-of-reference brightness-based laser-induced fluorescence method
复制标题
基于移动参考系亮度的激光诱导荧光法研究向下环流中扰动波的发展
DOI：
10.1007/s00348-020-03001-w
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发表时间：
2020
影响因子：
2.4
通讯作者：
An J
中科院分区：
文献类型：
--
作者：
An J
摘要提出了一种新的基于亮度的移动参考系激光诱导荧光（MFoR-BBLIF）方法，并在下行并流空气-水环状流中进行了实验验证。该方法被应用于研究在一系列条件下（ReL= 276-1321，ReG= 39，500 - 79，000）流动中单个扰动波的下游发展。在这种方法中，光学测量系统，因此，询问区域（ROI）被物理地沿着测试段的长度平移，其速度接近于单个干扰波的速度，以获得作为离入口的下游距离的函数的单个干扰波的速度。结果表明，单个扰动波的速度随下游距离和气液流动条件的增加而增加。此外，在较高的气体和液体雷诺数的波动速度的变化是更显着的。该方法可以与许多其他非接触式测量方法集成，也可以在一定的平移速度范围内使用（不一定以“拉格朗日”方式），以研究重要平流现象的演变。图形摘要
AbstractA novel moving frame-of-reference brightness-based laser-induced fluorescence (MFoR-BBLIF) method was developed and demonstrated in downwards co-current air–water annular flows. The method was applied to study the downstream development of individual disturbance waves in flows over a range of conditions (ReL= 276–1321, ReG= 39,500–79,000). In this method, the optical measurement system, and hence, the region of interrogation (ROI) was translated physically along the length of the test-section with a velocity close to that of individual disturbance waves to obtain the velocities of individual disturbance-waves as a function of downstream distance from the inlet. It was found that the velocities of individual disturbance waves increase with both downstream distance and gas–liquid flow conditions. In addition, the variation in the wave velocities was more significant at higher gas and liquid Reynolds numbers. The approach can be integrated with many other contactless measurement methods, and can also be used over a range of translation speeds (not necessarily in a “Lagrangian” manner) to study the evolution of important advecting flow phenomena.Graphic abstract
DOI：
10.1016/j.ijmultiphaseflow.2007.10.008
发表时间：
2008-02
影响因子：
3.8
作者：
T. Hazuku;T. Takamasa;Y. Matsumoto
通讯作者：
T. Hazuku;T. Takamasa;Y. Matsumoto
DOI：
--
发表时间：
1983
期刊：
影响因子：
--
作者：
N. Wilkes;B. Azzopardi;Chris P. Thompson
通讯作者：
Chris P. Thompson