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Simulation of Agglomerate Dispersion in Cubic Cavity Flow

✍ Scribed by Mahdi Salami Hosseini; Hossein Nazockdast; Patrick D. Anderson; Han E. H. Meijer

Book ID
102943312
Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
900 KB
Volume
18
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

Agglomerate dispersion and deformation is simulated and studied in a cavity flow, as a typical three‐dimensional flow field, using Stokesian dynamics and macroscopic flow analysis. The break‐up and deformation behaviors of two different agglomerate structures – loose, with fractal dimension F~D~ = 1.8, and dense, with F~D~ = 2.6 – are examined in different flow paths. The interparticle forces are calculated using van der Waals and Born forces. Results show that agglomerates with a dense structure break‐up through detachment, while ones with a loose structure deform and break into fragments through rupture. It was also found that the rearrangement of particles in the agglomerate can postpone break‐up in flow fields where rotation occurs, since it can dissipate stress through rearrangements.

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