Sensors & Transducers Journal

    (ISSN 1726- 5479)

Vol. 83, Issue 9, September 2007, pp.1527-1534

Modeling of Potential Distribution of Electrical Capacitance Tomography Sensor for Multiphase Flow Image

¹S. Sathiyamoorthy, ²J. Saratchandrababu, ³T. K. Radhakrishnan

¹Asst prof, dept of EIE, J.J College of Engg and Technology, Trichy-9, India

²Asst prof, dept of Chemical Engg, NIT, Trichy-15, India

³Prof, dept of Chemical Engg, NIT, Trichy-15, India

E-mail: ssathya_me@rediffmail.com

Received: 18 July 2007   /Accepted: 17 September 2007   /Published: 24 September 2007

Abstract: Electrical Capacitance Tomography (ECT) was used to develop image of various multi phase flow of gas-liquid-solid in a closed pipe. The principal difficulties to obtained real time image from ECT sensor are permittivity distribution across the plate and capacitance is nonlinear; the electric field is distorted by the material present and is also sensitive to measurement errors and noise. This work present a detailed description is given on method employed for image reconstruction from the capacitance measurements. The discretization and iterative algorithm is developed for improving the predictions with minimum error. The author analyzed eight electrodes square sensor ECT system with two-phase water-gas and solid-gas.

Keywords: Electrical capacitance tomography, Finite difference method, Discretization, Image reconstruction, Multi phase flow

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