Title :
Finite element modelling of electrostatic fields in process tomography capacitive electrode systems for flow response evaluation
Author :
Khan, S.H. ; Abdullah, F.
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng., City Univ., London, UK
fDate :
11/1/1993 12:00:00 AM
Abstract :
Various aspects and results of 2-D finite element (FE) modeling of electrostatic fields in 12-electrode capacitive systems for two-phase flow imaging are described. The capacitive technique relies on changes in capacitances between electrodes (mounted on the outer surface of the flow pipe) due to the change in permittivities of flow components. The measured capacitances between various electrode pairs and the field computation data are used to reconstruct the cross sectional image of the flow components. FE modeling of the electric field is necessary to optimize design variables and evaluate the system response to various flow regimes, likely to be encountered in practice. Results are presented in terms of normalized capacitances for various flow regimes. The effects of key geometric parameters of the electrode system are presented and analyzed
Keywords :
capacitance measurement; computerised tomography; electric fields; electrodes; finite element analysis; flow measurement; flow visualisation; two-phase flow; 12-electrode capacitive systems; 2D finite element modelling; electrical capacitive tomography; electrostatic fields; flow response evaluation; image quality; normalized capacitances; process tomography capacitive electrode systems; two-phase flow imaging; Capacitance measurement; Data flow computing; Design optimization; Electrodes; Electrostatic measurements; Finite element methods; Fluid flow measurement; Image reconstruction; Permittivity measurement; Surface reconstruction;
Journal_Title :
Magnetics, IEEE Transactions on
