利用电容层析成像技术实时测量多相流速度

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Sidi Mohamed Ahmed Ghaly, Mohammad Obaidullah Khan, Mohamed Shalaby, Khalid A. Alsnaie, Majdi Oraiqat
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引用次数: 0

摘要

准确和实时测量流体流速在各种工业过程中是至关重要的,特别是当处理多相流体时。传统的流量测量方法往往难以准确地量化管道内复杂多相流的速度。这一挑战需要探索能够提供可靠测量的创新技术。本文提出利用电容层析成像技术(ECT)测量管道中多相流体的速度是一种很有前途的方法。电痉挛技术涉及对管道内电容分布的非侵入性成像。通过在管道周围放置一组电极,可以重建电容分布,从而深入了解流体的流动模式。通过分析电容分布的时间变化,可以估计出管道内不同相位的速度。为了实现精确的速度测量,ECT系统需要考虑多相流带来的复杂性。各种图像重建算法,如线性反投影和迭代算法,如高斯-牛顿和Levenberg-Marquardt,用于重建电容分布。此外,利用先进的信号处理技术,如互相关分析和时差方法,从重建图像中提取速度信息。本文介绍了用ECT技术测量管道中多相流体流速的实验研究。该研究旨在通过探索电极设计、系统校准和数据处理技术的进步,解决与不同流动状态、流体性质和管道几何形状相关的挑战,以提高基于ect的速度测量的准确性和稳健性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Real Time Measurement of Multiphase Flow Velocity using Electrical Capacitance Tomography
Accurate and real-time measurement of fluid flow velocity is crucial in various industrial processes, especially when dealing with multiple phase fluids. Traditional flow measurement methods often struggle to accurately quantify the velocity of complex multiphase flows within pipes. This challenge necessitates the exploration of innovative techniques capable of providing reliable measurements. This paper proposes the utilization of Electrical Capacitance Tomography (ECT) as a promising approach for measuring the velocity of multiple phase fluids in pipes. The ECT technique involves the non-intrusive imaging of the electrical capacitance distribution within the pipe. By utilizing an array of electrodes placed around the pipe circumference, the capacitance distribution can be reconstructed, offering insight into the fluid flow patterns. By analyzing the temporal changes in the capacitance distribution, the velocity of different phases within the pipe can be estimated. To achieve accurate velocity measurements, an ECT system needs to account for the complexities introduced by multiphase flows. Various image reconstruction algorithms, such as linear back-projection and iterative algorithms like Gauss-Newton and Levenberg-Marquardt, are employed to reconstruct the capacitance distribution. Additionally, advanced signal processing techniques, such as cross-correlation analysis and time-difference methods, are used to extract velocity information from the reconstructed images. This paper presents an experimental investigation of measuring the velocity of multiple-phase fluids in pipes using the ECT technique. The study aims to address the challenges associated with different flow regimes, fluid properties, and pipe geometries by exploring advancements in electrode design, system calibration, and data processing techniques to enhance the accuracy and robustness of ECT-based velocity measurements.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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