层析成像技术在冰水两相流参数测量中的应用

张建国; 马福昌; 窦银科

doi:10.3788/OPE.20132108.1981

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层析成像技术在冰水两相流参数测量中的应用

微纳技术与精密机械 | 更新时间：2020-08-12

- 层析成像技术在冰水两相流参数测量中的应用
- Application of Electrical Resistance Tomography to Ice-water Two-phase Flow Parameters Measurement
- 光学精密工程 2013年21卷第8期页码：1981-1987
- 作者机构：
  
  太原理工大学新型传感器与智能控制教育部重点实验室,山西太原,030024
- 作者简介：
- 基金信息：
  
  基于电容感应技术的海冰厚度定点检测方法研究();电阻层析成像系统在冰水两相流参数检测研究();基于混合粒子群优化额无线传感器网络路由算法研究()
- DOI：10.3788/OPE.20132108.1981
  中图分类号： TP391
- 收稿日期：2013-02-21，
  
  修回日期：2013-04-01，
  
  网络出版日期：2013-08-20，
  
  纸质出版日期：2013-08-15
- 稿件说明：
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张建国马福昌窦银科. 层析成像技术在冰水两相流参数测量中的应用[J]. 光学精密工程, 2013,21(8): 1981-1987

ZHANG Jian-guo MA Fu-chang DOU Yin-ke. Application of Electrical Resistance Tomography to Ice-water Two-phase Flow Parameters Measurement[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 1981-1987
张建国马福昌窦银科. 层析成像技术在冰水两相流参数测量中的应用[J]. 光学精密工程, 2013,21(8): 1981-1987 DOI： 10.3788/OPE.20132108.1981.

ZHANG Jian-guo MA Fu-chang DOU Yin-ke. Application of Electrical Resistance Tomography to Ice-water Two-phase Flow Parameters Measurement[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 1981-1987 DOI： 10.3788/OPE.20132108.1981.

摘要

提出将电阻层析成像（ERT）技术应用于冰水两相流相含率、相分布等特征参数的测量，并设计了ERT测量系统，研究了基于图像的相含率计算方法。阐述了ERT系统的工作原理，提出了16电极ERT系统的设计方案。介绍了线性反投影图像重构算法(LBP)；并结合数字图像处理技术，提出了截面相含率的计算方法。最后，通过一组实验验证了电阻层析成像技术应用于冰水两相流检测的可行性。实验结果表明：通过ERT系统可以获得管道内冰柱在水中的位置以及实时运动结果，直观反映冰水两相介质的相分布；另外，通过ERT系统可以近似地真实反映冰柱的相对大小，两次截面相含率测量误差分别为6%与2.8%。研究表明

ERT技术可以实现冰水两相流的实时在线监测，而且具有良好的测量准确度。

Abstract

A method to measure ice-water two-phase flow was proposed by using an Electrical Resistance Tomography(ERT). An ERT system was designed and the calculating method for phase fractions was explored based on imaging technology. Firstly

the principle of ERT system was introduced

and the design scheme for the ERT system with 16 electrodes was proposed

then a Linear Back Projection (LBP) image reconstructed algorithm were given. Furthermore

the analyzing methods for measured data of ERT system were presented and applied them to the identification of phase distribution and the estimation of phase fractions. Finally

several experiments were performed to verify the applied feasibility of the ERT system to ice-water two-phase flow measurement. The experimental results show that the ERT system can be used to obtain the positions of ice column within a tube in water and their movement sates in real time and can reflect the phase distribution of ice-water two-phase media intuitively. The relative sizes of the ice column can be obtained by the ERT system and the error of phase fractions are 6% and 2.8%

respectively. The research results prove that the ERT system can monitor the transportation process of ice-water two-phase flow on-line with higher measuring accuracy.

关键词

Keywords

references

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