论文标题
测量垂直TEE结的环形流量之间的液体流速
Measurement of Liquid Flow Rate among the Annular Flow in Vertical Tee Junction
论文作者
论文摘要
由于环形流的液体流速与热交换效率密切相关，因此测量垂直TEE连接中环形流的液体流速具有很高的意义。为了获取垂直TEE连接中环形流的液体流速，已经设计了一种测量方法，该方法实现了数字减法方法，以测量可见光下液膜的厚度，并应用图像特征特征匹配算法以获得液体速度场。此外，在这项研究中，通过拟议的算法测试了液体膜速度场以及质量流速的空间和时间稳定性的准确性。实验结果表明，我们方法的测量误差在主管道和分支管道的下部约为5％，在主管道的上部低于15％。因此，与其他测量方法相比，该方法具有很高的精度。我们的方法可用于测量和分析垂直TEE连接中环形流的形状和特性。
Since the liquid flow rate of the annular flow is closely related to the heat exchange efficiency, it has great significance to measure the liquid flow rate of the annular flow in vertical tee junction. In order to acquire the liquid flow rate of the annular flow in vertical tee junction, a measurement method has been designed, which implements the digital subtraction method to measure the thickness of the liquid film under the visible light and to apply the image feature matching algorithm to obtain the liquid velocity field. Moreover, the accuracy of the liquid film velocity field as well as the spatial and temporal stability of the mass flow rate is tested by proposed algorithms in this study. Experimental results show that the measurement error of our method is approximately 5% in the lower section of the main pipe and the branch pipe, and lower than 15% in the upper section of the main pipe. Therefore, this method has a high accuracy in comparison with other measurement approaches. Our method can be applied to measure and analyse the shape and property of the annular flow in the vertical tee junction.
