Showing results 1 to 20 of 70
  Possibilities and limits of application of electrical resistance tomography in hydrodynamics of bubble columnsToye, Dominique  ; ; Simon, Daniel et alin Canadian Journal of Chemical Engineering (2005), 83(1), 4-10 Knowing the hydrodynamic regime in which is working a bubble column is of great importance because the regime affects strongly the mass transfer between the phases. To this end, we examine the ... [more ▼] Knowing the hydrodynamic regime in which is working a bubble column is of great importance because the regime affects strongly the mass transfer between the phases. To this end, we examine the potentialities of an Electrical Resistance Tomography (ERT) device. We analyse cross correlation of electrode pair measurements, of neighbouring pixels and power spectra of averaged pixels within a single plane as well as cross correlations of averaged pixels between two planes, without finding a clear signature of the churn turbulent flow. Variable gas flow rate inputs are used to determine the time resolution of the ERT. [less ▲] Detailed reference viewed: 32 (14 ULg)Data fusion between X-ray computed tomography and electrical capacitance tomography images obtained on an absorption columnsToye, Dominique ; L'Homme, Guy ; Crine, Michel et alConference (2003) Detailed reference viewed: 7 (0 ULg)Liquid distribution in a packed column : comparison between images obtained by X-ray computed tomography and by electrical capacitance tomographyToye, Dominique ; L'Homme, Guy ; Crine, Michel et alConference (2003) Detailed reference viewed: 7 (0 ULg) Rétention gazeuse dans une colonne à bulles contenant un liquide visqueux non-newtonien; ; Crine, Michel et alin Tribune de l'Eau (La) (2003), 56(622), 15-20 Detailed reference viewed: 26 (2 ULg)Perspectives in data fusion between x-ray computed tomography and electrical capacitance tomography in an absorption columnToye, Dominique ; L'Homme, Guy ; Crine, Michel et alin Dyakowski, T.; Kantzas, A.; Ronson, P. (Eds.) Proceedings of 3rd World Congress on Industrial Process Tomography, Banff, Canada, 2-5 septembre 2003 (2003) Detailed reference viewed: 13 (2 ULg)Détermination du régime hydrodynamique dans une colonne à bulles par tomographie électrique résistiveMarchot, Pierre ; ; L'Homme, Guy et alin Legrand, J. (Ed.) Récents Progrès en Génie des procédés - N°90 - Du rayonnement scientifique à la diffusion des technologies - Actes du 9ème Congrès de la Société Française de Génie des Procédés, 9-11 septembre 2003, Saint-Nazaire, France (2003) Detailed reference viewed: 31 (4 ULg)Distribution de la rétention dynamique de liquide dans une colonne à empilage : comparaison des résultats obtenus par tomographie à rayons X et par tomographie électrique capacitiveToye, Dominique ; ; Crine, Michel et alin Tribune de l'Eau (La) (2003), 56 Detailed reference viewed: 10 (4 ULg)Electrical resistance tomography sensor simulations: comparison with experiments; Crine, Michel ; L'Homme, Guy et alin Measurement Science & Technology (2002), 13(8), 1239-1247 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 ... [more ▼] 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. [less ▲] Detailed reference viewed: 34 (0 ULg)Gas-liquid-solid bubble column investigation by electrical resistance tomographyMarchot, Pierre ; ; Crine, Michel et alConference (2002) Detailed reference viewed: 5 (1 ULg)Rétention gazeuse dans une colonne à bulles contenant un liquide visqueux non-newtonien; ; Crine, Michel et alPoster (2002) Detailed reference viewed: 36 (0 ULg)Comparison between temporal pressure and ERT signals in a bubble column; Toye, Dominique ; Crine, Michel et alConference (2002) Detailed reference viewed: 2 (0 ULg)Distribution de la rétention dynamique de liquide dans une colonne à empilage : comparaison des résultats obtenus par tomographie à rayons X et par tomographie électrique capacitiveToye, Dominique ; ; Crine, Michel et alPoster (2002) Detailed reference viewed: 10 (0 ULg)Bubble columns : local gas holdup determination by electrical resistance tomography; Crine, Michel ; L'Homme, Guy et alPoster (2001) Detailed reference viewed: 8 (0 ULg)X-ray computed tomography : A key to revealing the secrets of small scale liquid maldistribution in packed beds; Marchot, Pierre ; Toye, Dominique et alConference (2001) Detailed reference viewed: 23 (1 ULg)Liquid holdup distribution in a corrugated sheet structured packing measured by X-ray tomographyToye, Dominique ; Marchot, Pierre ; Crine, Michel et alConference (2001) Detailed reference viewed: 13 (0 ULg)Analysis of electrical resistance tomography measurements obtained in a bubble column : dynamics aspects, first results; Crine, Michel ; L'Homme, Guy et alin Mann, R.; Mewes, D.; Ronson, P. (Eds.) Proceedings of 2nd World Congress on Industrial Process Tomography, Hanovre, Germany, 29-31 août 2001 (2001) Detailed reference viewed: 7 (4 ULg)Images tridimensionnelles de la rétention dynamique dans un empilage structuré obtenues par tomographie à rayons XToye, Dominique ; Marchot, Pierre ; Crine, Michel et alin Boudrant; Pons, M.-N.; Vivier, H. (Eds.) Récents Progrès en Génie des Procés - N°78 - Visualisation-Image-Modélisation - Actes du Congrès VIM2001 (Visualisation - Image- Modélisation), 15-17 mai 2001, Nancy, France (2001) Detailed reference viewed: 14 (2 ULg)Analyse de la distribution de la rétention dynamique de liquide dans une colonne gaz-liquide à garnissage par tomographie à rayons XToye, Dominique ; Crine, Michel ; L'Homme, Guy et alin Latifi, R.; Boudrant, J.; Tondeur, D. (Eds.) Récents Progrès en Génie des procédés - N°82 - Information, Modélisation, Simulation et Optimisation - Actes du 8ème Congrès de la Société française de Génie des Procédés, 17-19 octobre 2001, Nancy, France (2001) Detailed reference viewed: 25 (0 ULg)Imagerie par tomographie électrique résistive de la distribution des phases dans une colonne à bulles; Crine, Michel ; L'Homme, Guy et alin Boudrant, J.; Pons, M.-N.; Vivier, H. (Eds.) Récents Progrès en Génie des procédés - N°78 - Visualisation-Image-Modélisation - Actes du Congrès VIM2001 (Visualisation - Image- Modélisation), 15-17 mai 2001, Nancy, France (2001) Detailed reference viewed: 14 (1 ULg)Utilisation de la tomographie électrique résistive en vue de la caractérisation du fonctionnement d'une colonne à bulles; Crine, Michel ; L'Homme, Guy et alin Latifi, R.; Boudrant, J.; Tondeur, D. (Eds.) Récents Progrès en Génie des procédés - N°82 - Information, Modélisation, Simulation et Optimisation - Actes du 8ème Congrès de la Société française de Génie des Procédés, 17-19 octobre 2001, Nancy, France (2001) Detailed reference viewed: 17 (2 ULg) |
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