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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Measurements of cross-sectional instantaneous phase distribution in gas-liquid pipe flow
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Measurements of cross-sectional instantaneous phase distribution in gas-liquid pipe flow

机译：气液管流动截面瞬时相分布的测量

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摘要

Two novel complementing methods that enable experimental study of gas and liquid phases distribution in two-phase pipe flow are considered. The first measuring technique uses a wire-mesh sensor that, in addition to providing data on instantaneous phase distribution in the pipe cross-section, also allows measuring instantaneous propagation velocities of the phase interface. A novel algorithm for processing the wire-mesh sensor data is suggested to determine the instantaneous boundaries of gas-liquid interface. The second method applied here takes advantage of the existence of sharp visible boundaries between the two phases. This optical instrument is based on a borescope that is connected to a digital video camera. Laser light sheet illumination makes it possible to obtain images in the illuminated pipe cross-section only. It is demonstrated that the wire-mesh-derived results based on application of the new algorithm improve the effective spatial resolution of the instrument and are in agreement with those obtained using the borescope. Advantages and limitations of both measuring techniques for the investigations of cross-sectional instantaneous phase distribution in two-phase pipe flows are discussed. (c) 2006 Elsevier Inc. All rights reserved.
机译：考虑了两种新颖的补充方法，可以对两相管道流中的气相和液相分布进行实验研究。第一种测量技术使用金属丝网传感器，该传感器除了提供有关管道横截面中瞬时相分布的数据外，还可以测量相界面的瞬时传播速度。提出了一种用于处理金属丝网传感器数据的新颖算法，以确定气液界面的瞬时边界。这里应用的第二种方法利用了两相之间清晰可见的边界。该光学仪器基于连接到数字摄像机的管道镜。激光薄板照明可以仅在照明的管道横截面中获取图像。结果表明，基于新算法应用的网格结果提高了仪器的有效空间分辨率，与使用管道镜获得的结果一致。讨论了两种测量技术在研究两相管道流动中的横截面瞬时相分布方面的优点和局限性。 （c）2006 Elsevier Inc.保留所有权利。

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