Article (Scientific journals)
Electrical resistance tomography sensor simulations: comparison with experiments
Fransolet, E.; Crine, Michel; L'Homme, Guy et al.
2002In Measurement Science and Technology, 13 (8), p. 1239-1247
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Keywords :
electrical resistance tomography; bubble columns; finite-element method
Abstract :
[en] This paper compares experimental results (differences of potential), obtained with a 16-electrode electrical resistance tomography (ERT) device using the adjacent-electrode pair measurement strategy, with finite-element method (FEM) simulations in two and three dimensions. In the first part of the paper, ERT measurements made on a homogeneous medium are compared with two- and three-dimensional FEM simulations. It is shown that the dependence of the electrical field on the axial coordinate cannot be neglected. Consequently, only the three-dimensional FEM simulations are able to fit the experimental results. In the second part of the paper, ERT measurements on static physical phantoms immersed in water evidence that ERT is significantly more sensitive to non-symmetrical distributions than to symmetrical ones. This observation is confirmed by three-dimensional FEM simulations performed on numerical phantoms that mimic the physical ones. In the last part of the paper, an attempt to use three-dimensional simulations to determine the characteristics (diameter and gas content) of a gas core created by injecting a gas flow from a single-orifice gas sparger leads to promising results.
Research center :
Laboratoire de Génie chimique
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Fransolet, E.
Crine, Michel ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
L'Homme, Guy ;  Université de Liège - ULiège > Chimie appliquée > Génie chimique
Toye, Dominique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie de la réaction et des réacteurs chimiques
Marchot, Pierre ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques
Language :
English
Title :
Electrical resistance tomography sensor simulations: comparison with experiments
Publication date :
August 2002
Journal title :
Measurement Science and Technology
ISSN :
0957-0233
eISSN :
1361-6501
Publisher :
Iop Publishing Ltd, Bristol, United Kingdom
Volume :
13
Issue :
8
Pages :
1239-1247
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
MESURES HYDRODYNAMIQUES ET MODÉLISATION STOCHASTIQUE DANS LES SYSTÈMES POLYPHASIQUES DU GÉNIE DES PROCÉDÉS
Funders :
FWB - Fédération Wallonie-Bruxelles [BE]
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since 14 September 2009

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