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  4. Interface-resolved simulations of normal collisions of spheres on a wet surface
 
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Interface-resolved simulations of normal collisions of spheres on a wet surface

Publikationstyp
Journal Article
Date Issued
2017-11
Sprache
English
Author(s)
Tang, Yali  
Kuipers, Hans  
Buck, Britta  
Heinrich, Stefan  
Deen, Niels G.  
Institut
Feststoffverfahrenstechnik und Partikeltechnologie V-3  
TORE-URI
http://hdl.handle.net/11420/2686
Journal
AIChE journal  
Volume
63
Issue
11
Start Page
4774
End Page
4787
Citation
AIChE Journal 11 (63): 4774-4787 (2017-11)
Publisher DOI
10.1002/aic.15847
Scopus ID
2-s2.0-85026432895
Detailed knowledge of micromechanics of individual particle collisions with the presence of liquid is crucial for modelling/understanding of wet granular flows that are omnipresent in nature and industrial applications. Despite many reported studies, very limited detailed interface-resolved modeling of such collision problems has been conducted. This article presents an improved model for direct numerical simulations of normal impacts of spheres on wet surfaces. This model combines the immersed boundary method and the volume-of-fluid method supplemented with a model describing gas-liquid-solid contact line. It is demonstrated that our model not only correctly describes the collision dynamics of wet particles, but also well captures the dynamics of the liquid bridge formed during the collision. Quantitative agreement is obtained between the simulation results and the experimental data. It is concluded that the developed model constitutes a powerful tool to complement experimental studies, which are challenging for more complex wet collision systems in practice. © 2017 American Institute of Chemical Engineers AIChE J, 2017.
More Funding Information
German Research Foundation (DFG), Germany, with project number HE 4526/9?2.
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