Numerical Simulation Modelling for Velocity Measurement of Electromagnetic Flow Meter
An induced voltage EMF in the area of measuring single-phase flow rate in pipes has been used in many industrial areas. To measure the continuous phase velocity profile in multiphase flows where the continuous phase is an electrical conductor, Electrical capacitance and resistance tomography has been comprehensively investigated, except for continuous phase velocity profile measurement. This paper tries to design the numerical simulation model according to the basic electromagnetic induction law and to investigate the relationship between induced electric potential or potential drop and the velocity distribution of the conductive continuous phase in the flow. First, the 3-Dimenssion simulating module for EMF is built. Given the most simple velocity profile of the fluid in the pipe, the value of the induced potential difference between electrodes is obtained by simulation and theoretical computation according to J A Shercliffs weight function. The relative error is 6.066‰. This proves that the simulation model is accurate enough to investigate the characteristic of the induced potential difference of EMF. Finally, the relationship between induced potential difference and the velocity profile is analysed in detail where the complicated velocity profile is expressed as vz=lm/s when 0.022＜x2+y2＜=0.02652 and vz=5m/s when x2+y2＜=0.022.
J Z Wang C L Gong G.Y.Tian G.P.Lucas
Department of Electronic Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu 222005, School of Computing and Engineering, University of Huddersfield, Queensgate,Huddersfield HD1 3DH, UK
国际会议
第四届仪器科学与技术国际会议( 4th International Symposium on Instrumentation and Science and Tcchnology)
哈尔滨
英文
36-40
2006-08-08（万方平台首次上网日期，不代表论文的发表时间）