Measurement of bubble velocity using Capacitively Coupled Contactless Conductivity Detection (C4D) technique--颗粒学报PARTICUOLOGY

Wang, B., Zhou, Y., Ji, H., Huang, Z., & Li, H. (2013). Measurement of bubble velocity using Capacitively Coupled Contactless Conductivity Detection (C4D) technique. Particuology, 11(2), 198–203. https://doi.org/10.1016/j.partic.2012.05.006

Measurement of bubble velocity using Capacitively Coupled Contactless Conductivity Detection (C⁴D) technique

Baoliang Wang ^a *, Ying Zhou ^a, Haifeng Ji ^a, Zhiyao Huang ^a *, Haiqing Li ^a

a State Key Laboratory of Industrial Control Technology, Department of Control Science and Engineering, Zhejing University, Hangzhou 310027, China

10.1016/j.partic.2012.05.006

Volume 11, Issue 2, April 2013, Pages 198-203

Received 20 December 2011, Revised 27 March 2012, Accepted 14 May 2012, Available online 27 November 2012.

E-mail: blwang@iipc.zju.edu.cn; zyhuang@iipc.zju.edu.cn

Highlights

► A five-electrode C⁴D sensor was developed.

► The C⁴D sensor combined with cross-correlation technique was used to measure bubble velocity.

► The maximum relative error of velocity measurement of bubble was less than 5%.

Abstract

The feasibility of applying Capacitively Coupled Contactless Conductivity Detection (C⁴D) technique to measurement of bubble velocity in gas–liquid two-phase flow in millimeter-scale pipe is investigated. And, a new method, which combines the C⁴D technique and the principle of cross-correlation velocity measurement, is proposed for the measurement of bubble velocity. This research includes two parts. First, based on the principle of C⁴D, a new five-electrode C⁴D sensor is developed. Then, with two conductivity signals obtained by the C⁴D sensor, the velocity measurement of bubble is implemented according to the principle of cross-correlation. The research results indicate that the C⁴D technique is highly effective and anticipates a broad potential in the field of two-phase flow. Experimental results show that the five-electrode C⁴D sensor is suitable for measuring the velocity of single bubbles with a relative error of less than 5%.

Graphical abstract

Keywords

Bubble; Velocity measurement; Capacitively Coupled Contactless Conductivity Detection; Cross-correlation velocity measurement

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