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Lookup NU author(s): Dr Francisco KisukaORCiD, Dr Colin HareORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2023 The AuthorsGranular flow is common in many industrial applications, and involves heat generation from frictional contacts and inelastic collisions between particles. The self-heating process is still poorly understood despite being intrinsic to many processes. This work, for the first time, explores this problem experimentally by quantifying the temperature rise of granular flows in a rotating drum with a robust methodology based on infrared thermography. Particles of four different materials (lead, steel, plastic and glass) are used in the experiments, at various rotation speeds and drum fill ratios. To assess the mechanical behaviour, the flow regime of every experiment was determined. It was inferred that particles with higher density tend to generate more heat. It was also revealed that increasing the rotation speed favours the temperature rise. At the same time, the fill ratio had the least influence on the thermal response of the particulate systems considered.
Author(s): Rangel RL, Kisuka F, Hare C, Vivacqua V, Franci A, Onate E, Wu C-Y
Publication type: Article
Publication status: Published
Journal: Powder Technology
Year: 2023
Volume: 426
Print publication date: 01/08/2023
Online publication date: 04/05/2023
Acceptance date: 01/05/2023
Date deposited: 30/05/2023
ISSN (print): 0032-5910
ISSN (electronic): 1873-328X
Publisher: Elsevier B.V.
URL: https://doi.org/10.1016/j.powtec.2023.118619
DOI: 10.1016/j.powtec.2023.118619
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