中文摘要：

电磁流量计权函数的正确求解对测量速度分布极其重要,是电磁流量计基础理论的重要部分;文中采用有限元的方法,对一种特殊电磁流量计-非绝缘管壁电磁流量计的权重函数进行研究;首先用Comsol Multiphysics构建了非绝缘管壁电磁流量计的数值仿真模型并对边界条件进行研究,其次分析了不同电导率以及厚度测量管的权函数,最后从实验的角度验证分析结论;并证明了在有效区域内,当磁场均匀时,虚电流密度的分布与权函数分布的一致性;文中的分析方法在研究电磁流量计管壁污染以及电极污染对权函数的影响都具有非常重要的意义。

英文摘要：

Weight function of electromagnetic flow meter with non--insulation surface pipe is numerical simulated and verified. Weight function is very important for solution of flow velocity of distribution. In this paper, finite element method （FEM） is used for solve the weight function of this novel electromagnetic flow meter. First of all, numerical simulation model of electromagnetic flow meter with non-- insulation surface pipe is built by Comsol Multiphysics software. Boundary is researched. Secondly, analysis on weight values of different non --insulation pipe electromagnetic flow meters. These non--insulation pipe electromagnetic flow meters with different conductivity surface pipes and thicknesses. At lastly, experiments proved the result of this paper. The result of distribution of virtual current is same as weight value distribution has is proved under situation of uniform magnetic field. This method can be used in analysis different weight functions in other fields like pollution of surface pipe and electrode poles of electromagnetic flow meter. It is very meaningful.