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Digital predictions of complex cylinder packed columns

Caulkin, R., Ahmad, I., Fairweather, M., Jia, X. and Williams, R.A. (2009) Digital predictions of complex cylinder packed columns. Computers and Chemical Engineering, 33 (1). pp. 10-21. ISSN 0098-1354

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Abstract

A digital computational approach has been developed to simulate realistic structures of packed beds. The underlying principle of the method is digitisation of the particles and packing space, enabling the generation of realistic structures. Previous publications [Caulkin, R., Fairweather, M., Jia, X., Gopinathan, N., & Williams, R.A. (2006). An investigation of packed columns using a digital packing algorithm. Computers & Chemical Engineering, 30, 1178–1188; Caulkin, R., Ahmad, A., Fairweather, M., Jia, X., & Williams, R. A. (2007). An investigation of sphere packed shell-side columns using a digital packing algorithm. Computers & Chemical Engineering, 31, 1715–1724] have demonstrated the ability of the code in predicting the packing of spheres. For cylindrical particles, however, the original, random walk-based code proved less effective at predicting bed structure. In response to this, the algorithm has been modified to make use of collisions to guide particle movement in a way which does not sacrifice the advantage of simulation speed. Results of both the original and modified code are presented, with bulk and local voidage values compared with data derived by experimental methods. The results demonstrate that collisions and their impact on packing structure cannot be disregarded if realistic packing structures are to be obtained.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Elsevier B.V. This is an author produced version of a paper published in Computers & Chemical Engineering. Uploaded in accordance with the publisher's self archiving policy.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Process, Environmental and Materials Engineering (Leeds)
Depositing User: Sherpa Assistant
Date Deposited: 30 Jan 2009 13:01
Last Modified: 08 Feb 2013 17:05
Published Version: http://dx.doi.org/10.1016/j.compchemeng.2008.06.00...
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.compchemeng.2008.06.001
URI: http://eprints.whiterose.ac.uk/id/eprint/5433

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