scholarly journals Use of gamma Ray computed tomography (CT) and computer aided radioactive particle tracking (CARPT) in multiphase reactors

2003 ◽  
Vol 57 (6) ◽  
pp. 249-261 ◽  
Author(s):  
Milorad Dudukovic
Keyword(s):  
Computed Tomography ◽  
Particle Tracking ◽  
Gamma Ray ◽  
Fluid Model ◽  
Multiphase Reactors ◽  
Radioactive Particle Tracking ◽  
Radioactive Particle ◽  
Computer Aided ◽  
Slurry Bubble Columns ◽  
Gamma Ray Computed Tomography

This brief review focuses on the work performed at the Chemical Reaction Engineering Laboratory (CREL) at Washington University, St. Louis, in using Computer Aided Radioactive Particle Tracking (CARPT) and Gamma Ray Computed Tomography (CT), in generating velocity and phase holdup profiles in different multiphase reactors. This data is used for validation of the Euler-Euler interpenetrating fluid model executed in the framework of FLUENT and CFDLIB. Data for holdup and velocity profiles, as well as for mixing parameters, obtained in liquid-solid and gas-solid risers, slurry bubble columns, and stirred tanks, are discussed. It is shown that Euler-Euler simulations are capable of predicting such data well for the cases studied. Extension of CARPT-CT to industrial systems is briefly discussed.

Development of a Gamma-Ray Process Tomography System for Hydrodynamic Characterisation of Multiphase Reactors

2011 ◽  
Vol 83 ◽  
pp. 41-47 ◽  
Author(s):  
Abdullah Jaafar ◽  
Mohd Khairi Mohd Said ◽  
Nur Aira Abdul Rahman ◽  
Salzali Mohd ◽  
Mohamad Rabaie Shari ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Gamma Ray ◽  
Imaging Technique ◽  
Ct Scanner ◽  
Multiphase Reactors ◽  
Non Invasive ◽  
Tomography System ◽  
Expectation Maximisation ◽  
Gamma Ray Computed Tomography

Gamma-ray computed tomography (CT) is a powerful non-invasive imaging technique for viewing an object in 2-D or 3-D cross-section images without the need to physically section it. The invention of CT technique revolutionised the field of medical diagnostic imaging because it provides more detailed and useful information than any previous non-invasive imaging technique. The method is increasingly used in industrial fields. This paper describes the development of a gamma-ray computed tomography system for imaging and visualising of industrial multiphase reactors. The theoretical aspects of CT scanner, the system configurations and the adopted algorithm for image reconstruction are discussed. Penetrating radiation from an isotopic gamma-ray source of Cs-137 and a bank of NaI(Tl) scintillation detectors in combination with a dedicated mechanical gantry set-up were used to construct the CT system. During scanning, the movement of the detector’s bank and rotation table is controlled by a LabView-based software. The software is also designed to control all associated nuclear electronics equipments and finally to acquire gamma-ray transmission data. The image reconstruction is performed by using Expectation-Maximisation (EM) and Alternating-Maximisation (AM) algorithms written in Visual-Fortran programming language. Several physical phantoms to simulate industrial multiphase process columns and reactors were scanned using this CT scanner. Some of the reconstructed images are presented in this paper.

Gamma-ray computed tomography for scanning of agarwood tree: Data analysis and comparison

2020 ◽  
Author(s):  
Mohd Fitri Abdul Rahman ◽  
Lahasen Dahing ◽  
Muhamad Noor Izwan Ishak ◽  
Hearie Hassan ◽  
Nur Liyana Abdullah ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Data Analysis ◽  
Gamma Ray ◽  
Tree Data ◽  
Gamma Ray Computed Tomography

Gamma-Ray Computed Tomography for Imaging of Multiphase Flows

2013 ◽  
Vol 85 (7) ◽  
pp. 1002-1011 ◽  
Author(s):  
André Bieberle ◽  
Hans-Ulrich Härting ◽  
Swapna Rabha ◽  
Markus Schubert ◽  
Uwe Hampel
Keyword(s):  
Computed Tomography ◽  
Multiphase Flows ◽  
Gamma Ray ◽  
Gamma Ray Computed Tomography
Sign in / Sign up

Export Citation Format

Share Document