Sensitivity analysis of concave capacitance sensors for holdup measurement in two-phase flow

• Main Authors: Huat, B.Y., Ghai, L.L., Pao, W., Boon, T.T.
• Format: Article
• Published: Asian Research Publishing Network 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85009174909&partnerID=40&md5=7eda9bfc3fa6d9e919f3f5b8ed4028b2; http://eprints.utp.edu.my/25336/

Due to the complex flow structures of two-phase flow, the holdup measurement is a very challenging problem. In this paper, we use the finite element method to analyse a three-dimensional model of concave capacitance sensor. Both two-plate and four-plate sensors are investigated and compared in terms of the average sensitivity and sensitivity variation parameters. The average sensitivity of sensors is greatly increased during the shift from two-plate design to four-plate design. However, this causes the sensitivity variation parameter to be increased despite the usage of more plates. The geometry of the concave capacitance sensor is determined be 40° electrode angle for four-plate design has a better result as compared to 80° electrode angle of two-plate design. © 2006-2016 Asian Research Publishing Network (ARPN). All rights reserved.