关键词: 电容层析成像, 多相流, 电磁场有限元软件, 仿真, 图像重建

Abstract: Electrical Capacitance Tomography technique is a new technique for multi-phase flow measurement. With broad application prospects, the purpose of this technique is to identify each phase’s composition of two-phase/multi-phase flow system in a closed pipe. A new method-COMSOL is used to analyse the Electrical Capacitance Tomography of reconstruction image and simulation research. Different electrical models are established, and the reconstruction images of four kinds of representative flow are achieved; through simulation study of the field with disperse phase, the influence of the electrode number, shielding case and radial electrode to the imaging quality are analyzed; the reconstruction images of three-phase flow are achieved to obtain the satisfactory result.

Key words: Electrical Capacitance Tomography, multi-phase flow, COMSOL, simulation, reconstruction image