SENSITIVITY ANALYSIS OF CONCAVE CAPACITANCE SENSORS FOR HOLDUP MEASUREMENT IN TWO-PHASE FLOW release_vrmpdv46z5avpgoqwmzlyp33c4

Abstract

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.
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