Application of Electrical Resistance Tomography to Two-Phase Flow and Void Fraction Measurement

F Dong, XT Qiao, Z X Jiang, L A Xu

School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, P.R.China Email: fdong@mail.tju.edu.cn

ABSTRACT

This paper introduces the TERT-IV prototype developed by Tianjin University. The application of the TERT–IV system to measure parameters of two-phase flow has been studied. The methods of analyzing measured data of ERT system are presented and used to estimate void fraction. For the different phase distribution on pipe cross-section, the methods of relative changes summation and polynomial regression are used to estimate void fraction, and proved to be possible by comparing results of simulation calculation to analytic results of experimental measured data.

Keywords Electrical Resistance Tomography, Two-Phase Flow, Void Fraction