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Response Characteristic of Small Diameter Electromagnetic Flow Meter with 3D Model

LI Ying-wei, XING Kai, YU Li-na, DU Sheng-xue

Abstract



Virtual current distribution in the electromagnetic flow meter is an important aspect in electromagnetic sensor measurement theory. Sensitive quantitatively characterize the virtual current potential influence caused by the existence of oil bubble. The model established in 3D has much more actual significance than that in 2D, and 2D assumption overestimates the effects of the bubble especially the small bubble on the electromagnetic flow meter. This paper establishes the theoretical model in three-dimensional case when multiple bubbles exist, and analyses its response characteristics of different oil bubbles with Schwarz?s alternating method. The results show the regularity of non-conductive material impact on the virtual current distribution, which provided theoretical basis for the structural optimization of the small diameter electromagnetic flow meter sensor.

Keywords


electromagnetic flowmeter, sensitivity field, alternating method, response characteristic.

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