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A Finite-Discrete Element Model for Simulating Collision and Fragmentation of Nanoparticle Agglomerates
  • Zuyang Zhang,
  • Daoyin Liu
Zuyang Zhang
Southeast University
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Daoyin Liu
Southeast University

Corresponding Author:[email protected]

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The fragmentation/adhesion behavior of nanoparticle agglomerate collision, which is challenging to model, is a crucial factor affecting fluidization. In this study, a discrete-finite element method (FDEM) based cohesive crack model is developed to simulate normal collisions between a complex agglomerate (around 1 mm) and a wall. In the FDEM model, the complex agglomerate is built from primary agglomerates (around a few micrometers), whose adhesive force and Young’s modulus are measured by an atomic force microscope (AFM). Simulation results agree well with the collision experiments. Furthermore, the effects of adhesive force, solid holdup and Young’s modulus on fragmentation behavior are explored, and a two-parameter Weibull function is found to fit well with the fragment distribution. The current FDEM model provides a link between the collision behavior and agglomerate properties. The detailed fragmentation/adhesion information can be useful for developing a macro model for agglomerate collision in the future.
08 Jun 2023Submitted to AIChE Journal
25 Jun 2023Submission Checks Completed
25 Jun 2023Assigned to Editor
25 Jun 2023Review(s) Completed, Editorial Evaluation Pending
07 Jul 2023Reviewer(s) Assigned
07 Aug 2023Editorial Decision: Revise Major
04 Sep 20231st Revision Received
05 Sep 2023Submission Checks Completed
05 Sep 2023Assigned to Editor
05 Sep 2023Review(s) Completed, Editorial Evaluation Pending
07 Sep 2023Reviewer(s) Assigned
01 Oct 2023Editorial Decision: Accept