Reference : Simulations of Structures in Packed Columns and Validation by X-ray Tomography
Scientific journals : Article
Engineering, computing & technology : Chemical engineering
http://hdl.handle.net/2268/5598
Simulations of Structures in Packed Columns and Validation by X-ray Tomography
English
[fr] Simulation de la structures de colonnes à empilage et validation par tomographie à rayons X
Caulkin, R. [University of Leeds > Institute of Particle Science and Engineering > > >]
Jia, X. mailto [University of Leeds > Institute of Particle Science and Engineering > > >]
Xu, C. [Structure Vision Ltd > > > >]
Fairweather, M. mailto [University of Leeds > Institute of Particle Science and Engineering > > >]
Williams, R. A. mailto [University of Leeds > Institute of Particle Science and Engineering > > >]
Stitt, H. [Johnson Matthey Catalysts > > > >]
Nijemeisland, M. [Johnson Matthey Catalysts > > > >]
Aferka, Saïd [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires >]
Crine, Michel mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires >]
Léonard, Angélique mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires - Département de chimie appliquée >]
Toye, Dominique mailto [Université de Liège - ULg > Département de chimie appliquée > Génie de la réaction et des réacteurs chimiques >]
Marchot, Pierre mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques >]
2009
Industrial & Engineering Chemistry Research
American Chemical Society
48
1
202-213
Yes (verified by ORBi)
International
0888-5885
[en] tomography ; packed bed ; packing simulation
[fr] validation
[en] Packing simulations of generic, nonspherical pellets were performed and compared with experimental data sets obtained using X-ray Computerized tomography (CT). Two modified versions of what was previously a purely geometrical, digitally based packing algorithm were implemented. Both are aimed at incorporating the effects of particle interaction forces, one utilizing the distinct element method (DigiDEM) and the other an intermediate solution (collision-guided packing or DigiCGP). This article summarizes the models and the simulations performed using these two modified versions of DigiPac and, for model validation purposes, compares the predicted results with the corresponding X-ray tomographic scans of packed columns, in terms of bulk density, local packing density profiles, and pellet orientation distributions. For packed beds of relatively large and identical pellets, the simulation results indicate that particle-particle and particle-wall interactions cannot be ignored if realistic packing structures are to be obtained by simulation and even a simplistic treatment of these interactions can produce significantly more realistic packing structure than none at all.
http://hdl.handle.net/2268/5598
10.1021/ie800033a

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