Real Time Volumetric Imaging of Multiphase Flows Using Electrical Capacitance Volume-Tomography (ECVT)

W. Warsito1, Q. Marashdeh2, and L.S. Fan2

1 Dept. of Physics, University of Indonesia, Depok 16424, Indonesia, wsito@yahoo.com.

2 Dept. of Chem. and Biomolecular Eng., The Ohio State University, Columbus, OH 43210, USA, Email: fan@chbmeng.ohio-state.edu

ABSTRACT

A volumetric imaging technique based on the principle of electrical capacitance tomography (ECT), namely electrical capacitance volume tomography (ECVT), developed earlier by the authors, is applied to multiphase flow systems in different geometries of reactor vessels. Real time volume images of gas- solid flows in cylindrical fluidized bed in various conditions, obtained using the ECVT technique, are presented. Attempts to apply the technique for imaging of flow systems with different vessel geometries, such as a pipe bend and planar plate, are also made. The results show a high accuracy in ECVT when it is applied to cylindrical columns and a reasonable accuracy when applied to non- cylindrical columns of arbitrary geometries.

Keywords Volumetric flow imaging, three-dimension, electrical capacitance tomography (ECT), electrical capacitance volume tomography (ECVT)