A Study of Composite Flow Meter Based on the Theory of Electromagnetic and Ultrasonic

Abstract:

This thesis, under the guiding of electromagnetic and ultrasonic theory, tries to do numerical simulation based on the Fluent simulation software. The composite flowmeter (CFM) improves the accuracy of metrology on water flow and equipment itself with self-calibration and inter-calibration function. The aim is to calculate the average velocity of fluid on the cross-section at the electrode and the stability of flow field by researching on the influence of transducer. The result shows when the distance between two transducers is close, influences the flow field near the electrode, but when the product of two transducers distance and pipe diameter is around 4000, the average fluid velocity is close to the pre-selected fluid velocity and without any swirl. After comprehensive thinking on the structure influence of excitation coil, the transducer should been equipped on the same longitudinal section with the electrode.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.309
• Online since: June 2014
• Authors: Xi Te Zhang, Qian Min Mao*, Zhi Gang Nie, Zhen Wei Huang, Wen Xin Shen
• Keywords: Electrode, Inter-Calibration, Self-Calibration, Transducer

References

[1] D.W. Clarke, J. Hemp: Flow Measurement and Instrumentation Vol. 20 (2009), pp.22-37.

[2] Y.H. Xu: Flow Measurement (China Zhijian Publishing House, Beijing 2012).

[3] W.C. Cai: Process Automation Instrumentation Vol. 28 (2007), pp.1-4.

[4] BS ISO 13359, Measurement of conductive liquid flow in closed conduits-flanged electromagnetic flowmeters-Overall length, BSI (1998).

DOI: 10.3403/01319500u

[5] X.S. Zhao: Acta Metrologica Sinca Vol. 33(2012), pp.1-6.

[6] Colin J. Bates, Roger B. Turner: Measurement Vol. 33 (2003), pp.85-94.

[7] F. J. Wang: Computational Fluid Dynamics Analysis (Tsinghua University Press, China 2004).

[8] S.S. Zhang: Computational Fluid Dynamics and Application (HuaZhong University of Science & Technology Press, China 2011).