Optimization of a convex pattern surface for sliding wear reduction based on a definitive screening design and discrete element method
Yunpeng Yan (TU Delft - Transport Engineering and Logistics)
Rudy Helmons (TU Delft - Offshore and Dredging Engineering)
Craig Wheeler (The University of Newcastle, Australia)
D.L. Schott (TU Delft - Transport Engineering and Logistics)
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Abstract
A previous study revealed that a convex pattern surface can reduce sliding wear of a transfer chute. A convex pattern surface is a flat surface outfitted with a pattern of convexes defined by five parameters. A three-level definitive screening design (DSD) method combined with discrete element method (DEM) is used to investigate the influence of the five parameters and two operational conditions on the sliding wear. Two flow regimes are distinguished, namely continuous and discontinuous flow regimes, and both flow regimes can significantly reduce the sliding wear. The particle velocity and angular velocity profiles verify the guiding and rolling effect of the convex pattern on the motion of particles. A regression model fitted based on the DSD indicates that three main factors and one interaction have significant influence on the sliding wear.
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