Reconstruction of liquid metal flow velocity field based on electromagnetic flow tomography

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

Flow Measurement and Instrumentation Pub Date : 2024-12-09 DOI:10.1016/j.flowmeasinst.2024.102792

Lei Han , Wenrong Yang , Jing Liu , Yuanyuan Li , Guoqiang Liu

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引用次数: 0

Abstract

Electromagnetic flowmeters are one of the most commonly used means of measuring liquid metal flow rates, but traditional electromagnetic flowmeters experience significant systematic errors when measuring the flow rate of liquid metals with non-axisymmetric or uneven distribution. Therefore, this paper proposes a method based on electromagnetic flow tomography (EMFT) to measure the flow velocity field of liquid metals. The EMFT technique reconstructs symmetric and asymmetric flow velocity distributions by means of multidirectional magnetic field excitation and multiple electrodes to measure the induced potentials. In this paper, the sensitivity formula applicable to liquid metals is re-derived based on the reciprocity theorem, and an image reconstruction algorithm is applied to achieve online reconstruction of the velocity field. The experimental results show that the method in this paper can accurately reflect the distribution of various velocity fields, such as axisymmetric, non-axisymmetric and clogging, and has good application prospects.

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来源期刊

Flow Measurement and Instrumentation 工程技术-工程：机械

CiteScore

4.30

自引率

13.60%

发文量

123

审稿时长

6 months

期刊介绍： Flow Measurement and Instrumentation is dedicated to disseminating the latest research results on all aspects of flow measurement, in both closed conduits and open channels. The design of flow measurement systems involves a wide variety of multidisciplinary activities including modelling the flow sensor, the fluid flow and the sensor/fluid interactions through the use of computation techniques; the development of advanced transducer systems and their associated signal processing and the laboratory and field assessment of the overall system under ideal and disturbed conditions. FMI is the essential forum for critical information exchange, and contributions are particularly encouraged in the following areas of interest: Modelling: the application of mathematical and computational modelling to the interaction of fluid dynamics with flowmeters, including flowmeter behaviour, improved flowmeter design and installation problems. Application of CAD/CAE techniques to flowmeter modelling are eligible. Design and development: the detailed design of the flowmeter head and/or signal processing aspects of novel flowmeters. Emphasis is given to papers identifying new sensor configurations, multisensor flow measurement systems, non-intrusive flow metering techniques and the application of microelectronic techniques in smart or intelligent systems. Calibration techniques: including descriptions of new or existing calibration facilities and techniques, calibration data from different flowmeter types, and calibration intercomparison data from different laboratories. Installation effect data: dealing with the effects of non-ideal flow conditions on flowmeters. Papers combining a theoretical understanding of flowmeter behaviour with experimental work are particularly welcome.