JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Development of Three-ring Conductance Sensor based on Flexible Printed Circuit Board for Measuring Liquid Film thickness in Two-phase Flow with High Resolution
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Development of Three-ring Conductance Sensor based on Flexible Printed Circuit Board for Measuring Liquid Film thickness in Two-phase Flow with High Resolution
Lee, Kyu-Byoung; Kim, Jong-Rok; Euh, Dong-Jin; Park, Goon-Cherl; Cho, Hyoung Kyu;
  PDF(new window)
 Abstract
To understand a two-phase flow, a liquid film thickness is one of the important factors. A lot of researches have been performed to measure liquid film thickness with various approaches. Recently, an electrical conductance method which uses the conductivity of the liquid film has been widely applied on measuring the liquid film thickness. Though the electrical method has an advantage in high spatial resolution, as the conductivity of liquid can be affected by its temperature variation, the conventional electrical conductance methods have a limitation in being applied on varying temperature conditions where a heat transfer is involved. The purpose of this study is to develop a three-ring liquid film sensor that overcomes the limitation of the conventional method. The three-ring conductance method can measure the film thickness regardless of temperature variation by compensating the change of liquid conductivity. Considering its application on a wide range of conditions such as high temperature or curved surfaces, the sensor was fabricated on flexible printed circuit board (FPCB) in this study. This paper presents the concept of the measurement method, design procedure, prototype sensor fabrication and calibration results.
 Keywords
Liquid film sensor;Three-ring conductance method;FPCB;Two-phase flow;
 Language
Korean
 Cited by
 References
1.
M.Damsohn, H. -M. Prasser, High-speed liquid sensor for two-phase flows with high spatial resolution based on electrical conductance, Flow Measurement and Instrumentation, Vol. 20, pp.1-14, 2009. crossref(new window)

2.
M.Damsohn, H. -M. Prasser, Experimental studies of the effect of functional spacers to annular flow in subchannels of a BWR fuel element, Nuclear Engineering and Design, Vol. 240, pp. 3126-3144, 2010. crossref(new window)

3.
H. -M. Prasser, A. Bottger, J. Zschau, A new electrodemesh tomograph for gas-liquid flows, Flow Measurement and Instrumentation, Vol. 9, pp. 111-119, 1998. crossref(new window)

4.
M. Hayashi, Temperature-electrical conductivity relation of water for environmental monitoring and geophysical data inversion, Environmental Monitoring and Assessment, pp. 119-128, 2004.

5.
J. R. Kim, H. K. Cho, D. J. Euh, "Experimental study of the characteristics of three flat probe conductance meter", Transactions of the Korean Society of Mechanical Engineers., pp. 378, Dec 2013.

6.
K. B. Lee, J. R. Kim, D. J. Euh, G. C. Park, H. K. Cho, "Development of three-ring conductance meter on flexible printed circuit board for liquid film thickness measurement", Transactions of the Korean Nuclear Society Spring Meeting, 2015.

7.
J. H. Yang, H. K. Cho, D. J. Euh, G. C. Park, Experimental study on two-dimensional film flow with local measurement methods, Nuclear Engineering and Design, Vol. 294, pp. 137-151, 2015. crossref(new window)

8.
COMSOL Multiphysics User's Guide 5.1, COMSOL, 2015.