ERT visualization of gas dispersion performance of aerofoil and radial impellers in an agitated vessel

Mohd Sobri Takriff, Azmi Ahmad, Masli Irwan Rosli, Sadiah Jantan

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The objective of this research work was to determine the gas dispersion performance of an aerofoil impeller and a standard Rushton turbine for gas-liquid mixing an agitated vessel via electrical resistance tomography (ERT) visualization. The experimental work was carried out in a fully baffled 400-mm-diameter agitated vessel that was fitted with four planes of 16 stainless steel electrodes connected to an ITS P2000 ERT system. Agitation was achieved by using a Lightnin Labmaster system mounted on the vessel. The ITS ERT system is equipped with a real-time data acquisition system that has the capability to capture images at up to 20 frames per second. The gas dispersion images were reconstructed using built-in image reconstruction software based on a modified linear back projection algorithm. A Matlab code was also developed to further analyse the gas dispersion by plotting a real-time surface plot from the ERT data. Various gas dispersion conditions such as flooded, transition, and dispersed were successfully visualized and characterized using the ERT technique, and over the range of the experimental works, the standard Rushton turbine was found to be a more efficient than the Lightnin A320 impeller.

Original languageEnglish
Pages (from-to)75-78
Number of pages4
JournalJurnal Teknologi (Sciences and Engineering)
Volume64
Issue number5
DOIs
Publication statusPublished - 2013

Fingerprint

Impellers
Acoustic impedance
Airfoils
Tomography
Visualization
Gases
Turbines
Image reconstruction
Data acquisition
Stainless steel
Electrodes
Liquids

Keywords

  • Electrical resistance tomography
  • Gas dispersion
  • Gas-liquid mixing
  • Impeller flooding

ASJC Scopus subject areas

  • Engineering(all)

Cite this

@article{de35ea74439e4346b94f918b70a3fc5a,
title = "ERT visualization of gas dispersion performance of aerofoil and radial impellers in an agitated vessel",
abstract = "The objective of this research work was to determine the gas dispersion performance of an aerofoil impeller and a standard Rushton turbine for gas-liquid mixing an agitated vessel via electrical resistance tomography (ERT) visualization. The experimental work was carried out in a fully baffled 400-mm-diameter agitated vessel that was fitted with four planes of 16 stainless steel electrodes connected to an ITS P2000 ERT system. Agitation was achieved by using a Lightnin Labmaster system mounted on the vessel. The ITS ERT system is equipped with a real-time data acquisition system that has the capability to capture images at up to 20 frames per second. The gas dispersion images were reconstructed using built-in image reconstruction software based on a modified linear back projection algorithm. A Matlab code was also developed to further analyse the gas dispersion by plotting a real-time surface plot from the ERT data. Various gas dispersion conditions such as flooded, transition, and dispersed were successfully visualized and characterized using the ERT technique, and over the range of the experimental works, the standard Rushton turbine was found to be a more efficient than the Lightnin A320 impeller.",
keywords = "Electrical resistance tomography, Gas dispersion, Gas-liquid mixing, Impeller flooding",
author = "Takriff, {Mohd Sobri} and Azmi Ahmad and Rosli, {Masli Irwan} and Sadiah Jantan",
year = "2013",
doi = "10.11113/jt.v64.2136",
language = "English",
volume = "64",
pages = "75--78",
journal = "Jurnal Teknologi",
issn = "0127-9696",
publisher = "Penerbit Universiti Teknologi Malaysia",
number = "5",

}

TY - JOUR

T1 - ERT visualization of gas dispersion performance of aerofoil and radial impellers in an agitated vessel

AU - Takriff, Mohd Sobri

AU - Ahmad, Azmi

AU - Rosli, Masli Irwan

AU - Jantan, Sadiah

PY - 2013

Y1 - 2013

N2 - The objective of this research work was to determine the gas dispersion performance of an aerofoil impeller and a standard Rushton turbine for gas-liquid mixing an agitated vessel via electrical resistance tomography (ERT) visualization. The experimental work was carried out in a fully baffled 400-mm-diameter agitated vessel that was fitted with four planes of 16 stainless steel electrodes connected to an ITS P2000 ERT system. Agitation was achieved by using a Lightnin Labmaster system mounted on the vessel. The ITS ERT system is equipped with a real-time data acquisition system that has the capability to capture images at up to 20 frames per second. The gas dispersion images were reconstructed using built-in image reconstruction software based on a modified linear back projection algorithm. A Matlab code was also developed to further analyse the gas dispersion by plotting a real-time surface plot from the ERT data. Various gas dispersion conditions such as flooded, transition, and dispersed were successfully visualized and characterized using the ERT technique, and over the range of the experimental works, the standard Rushton turbine was found to be a more efficient than the Lightnin A320 impeller.

AB - The objective of this research work was to determine the gas dispersion performance of an aerofoil impeller and a standard Rushton turbine for gas-liquid mixing an agitated vessel via electrical resistance tomography (ERT) visualization. The experimental work was carried out in a fully baffled 400-mm-diameter agitated vessel that was fitted with four planes of 16 stainless steel electrodes connected to an ITS P2000 ERT system. Agitation was achieved by using a Lightnin Labmaster system mounted on the vessel. The ITS ERT system is equipped with a real-time data acquisition system that has the capability to capture images at up to 20 frames per second. The gas dispersion images were reconstructed using built-in image reconstruction software based on a modified linear back projection algorithm. A Matlab code was also developed to further analyse the gas dispersion by plotting a real-time surface plot from the ERT data. Various gas dispersion conditions such as flooded, transition, and dispersed were successfully visualized and characterized using the ERT technique, and over the range of the experimental works, the standard Rushton turbine was found to be a more efficient than the Lightnin A320 impeller.

KW - Electrical resistance tomography

KW - Gas dispersion

KW - Gas-liquid mixing

KW - Impeller flooding

UR - http://www.scopus.com/inward/record.url?scp=84886303958&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84886303958&partnerID=8YFLogxK

U2 - 10.11113/jt.v64.2136

DO - 10.11113/jt.v64.2136

M3 - Article

VL - 64

SP - 75

EP - 78

JO - Jurnal Teknologi

JF - Jurnal Teknologi

SN - 0127-9696

IS - 5

ER -