Bubbling fluidized bed characterization using Electrical Capacitance Volume Tomography (ECVT)

Electrical Capacitance Volume Tomography: Design and Applications

This article reports recent advances and progress in the field of electrical capacitance volume tomography (ECVT). ECVT, developed from the two-dimensional electrical capacitance tomography (ECT), is a promising non-intrusive imaging technology that can provide real-time three-dimensional images of the sensing domain. Images are reconstructed from capacitance measurements acquired by electrodes...

Monitoring Fluidized Bed Dryer Hydrodynamics Using Pressure Fluctuations and Electrical Capacitance Tomography

Investigation of Electrostatic Charging Phenomenon in Multiphase Flows Using the Ecvt System

Summary) Among tomography techniques for process control and visualization, electrical based tomography systems are the most prominent due to their low construction cost, high speed, and safety. The development of electrical tomography has been mainly focused on permittivity, conductivity, or permeability imaging. Successful implementation of tomography systems depends on the sensor configurati...

Experimental and Theoretical Investigation on the Mechanism of Transient Bubble Images in Fluidized-Bed Combustors Systematic Interpretation and Analysis

The transient bubble behavior was experimentally investigated to fundamentally understand the transient motion of gas bubbles in freely bubbling fluidized beds, simulating the FBC systems. Due to the oversimplified traditional two phase flow model concepts developed and most of the related numerous experimental works from 1960s to 1980s, the transient bubble behaviors could not have received du...

3D Eulerian simulation of a gas-solid bubbling fluidized bed: assessment of drag coefficient correlations

Fluidized beds have been widely used in power generation and in the chemical, biochemical, and petroleum industries. The 3D simulation of commercial scale fluidized beds has been computationally impractical due to the required memory and processor speeds. However, in this study, 3D Computational Fluid Dynamics simulation of a gas-solid bubbling fluidized bed is performed to investigate the effe...