Journal
COMPUTERS & CHEMICAL ENGINEERING
Volume 97, Issue -, Pages 161-174Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compchemeng.2016.11.034
Keywords
Discrete element method; Freeman rheometer; Flowability; Particle properties; Parameter estimation; Principal component analysis
Funding
- IPROCOM Marie Curie initial training network - People Programme (Marie Curie Actions) of the European Union under REA [316555]
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The flowability of powders in a Freeman Rheometer (FT4) is explored in this study using discrete element method (DEM). Five DEM input parameters describing particle properties: static and rolling friction coefficients, coefficient of restitution, Young's modulus and cohesion energy density (using JKR cohesion model) were explored in a matrix of simulations using Design of Simulation (DoS) principles. The impact of these parameters was assessed against two responses from the FT4 test: the basic flowability energy (BFE) and specific energy (SE). By using a combination of empirical effects and interactions analysis and principal component analysis (PCA), it was found that static and rolling friction parameters play a critical role in determining the BFE and SE of a powder, whilst cohesion energy density also plays a significant role in influencing BFE. The combination of these methods has helped deliver a roadmap to show which parameters would be effectively calibrated on an FT4. (C) 2016 Elsevier Ltd. All rights reserved.
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