Continuous phase velocity profile measurement in multiphase flow using a non-invasive multi-electrode electromagnetic flow meter
Continuous phase velocity profile measurement in multiphase flow using a non-invasive multi-electrode electromagnetic flow meter
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DOI：
10.1063/1.3694712
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发表时间：
2012-03
期刊：
影响因子：
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通讯作者：
T. Leeungculsatien;G. Lucas
中科院分区：
文献类型：
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作者：
T. Leeungculsatien;G. Lucas
本文介绍了一种测量轴向速度分布不均匀多相流速度分布的电磁流量计的新设计。亥姆霍兹线圈用于产生均匀磁场，该磁场与嵌入在非导电管壁内表面的电极阵列的流动方向和平面正交。从电极阵列获得的感应电压通过称为“权重值”的变量与流速分布相关，该变量使用COMSOL Multiphysics软件计算。采用矩阵反演法，根据在电极阵列处测得的感应电压，计算出流动截面内的速度分布。将流管截面分成若干像素，并根据测量的感应电压计算每个像素中连续相的平均流速。本文给出了倾斜水固体中连续水相速度剖面的重建实验结果。
This paper describes a novel design of electromagnetic flow meter for velocity profile measurement in multiphase flows with non-uniform axial velocity profiles. A Helmholtz coil is used to produce a uniform magnetic field orthogonal to both the flow direction and the plane of an electrode array embedded on the internal surface of a non-conducting pipe wall. Induced voltages acquired from the electrode array are related to the flow velocity distribution via variables known as 'weight values' which are calculated using COMSOL Multiphysics software. Matrix inversion is used to calculate the velocity distribution in the flow cross section from the induced voltages measured at the electrode array. The flow pipe crosssection is divided into a number of pixels and the mean flow velocity of the continuous phase in each of the pixels is calculated from the measured induced voltages. Experimental results are presented for the reconstructed velocity profile of the continuous water phase in an inclined solids-in-wate...