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  4. Numerical investigation of collision dynamics of wet particles via force balance
 
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Numerical investigation of collision dynamics of wet particles via force balance

Publikationstyp
Journal Article
Date Issued
2018-04
Sprache
English
Author(s)
Buck, Britta  
Lunewski, Johannes  
Tang, Yali  
Deen, Niels G.  
Kuipers, Hans  
Heinrich, Stefan  
Institut
Feststoffverfahrenstechnik und Partikeltechnologie V-3  
TORE-URI
http://hdl.handle.net/11420/2433
Journal
Chemical engineering research and design  
Volume
132
Start Page
1143
End Page
1159
Citation
Chemical Engineering Research and Design (132): 1143-1159 (2018-04)
Publisher DOI
10.1016/j.cherd.2018.02.026
Scopus ID
2-s2.0-85042883304
Knowledge of collision dynamics of solid materials is fundamental to understand and predict the behavior of particulate macro processes such as in fluidized beds, mixers and granulators. Especially, particle collisions with the presence of liquids are still not fully understood. Many experimental investigations address energy dissipation due to the collision and the liquid involved. For this the so-called coefficient of restitution is often used, which is defined as ratio of rebound to impact velocity, as such describing dissipation of kinetic energy. In this work a numerical model based on force balances is proposed, which predicts the coefficient of restitution for normal and oblique collisions of a particle and a wet plate. The model is validated by extensive experiments regarding the influence of collision parameters such as collision velocity and angle, liquid properties as well as initial particle rotation. Good agreement between model and experiments is found for all investigated parameters.
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