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Simulation study on the influence of ignition location and feeding temperature during powder free falling

Siti Ilyani, Rani and Jolius, Gimbun (2020) Simulation study on the influence of ignition location and feeding temperature during powder free falling. In: AIP Conference Proceedings: Proceedings of Advanced Material, Engineering & Technology, 29-30 November 2019 , Seoul, South Korea. pp. 1-2., 2291 (0022962). ISSN 0094-243X ISBN 978-0-7354-4023-4

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Abstract

This paper presents the findings on the influence of ignition positions at various feeding temperatures on pressure and temperature profiles in silo using computational fluid dynamics code, FLUENT. The RNG k-ε model is used to simulate the turbulence of the gas phase, and the species transport model was selected within the disperse phase model to enable the prediction of dust cloud combustion. The finite rate-eddy dissipation model was employed in the combustion model. The result shows that the pressure was decreased about 16% when the ignition location is located at the bottom of the silo compared to the ones at the middle. It was found that the ignition source would not induce a dust explosion when the feeding and surrounding temperatures are equal. Findings reported in this work enhanced understanding of the ignition sensitivity arising from dust-air mixtures during the silo filling operation.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Ignition positions; Combustion model; Ignition sensitivity
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 26 Feb 2021 02:32
Last Modified: 26 Feb 2021 02:32
URI: http://umpir.ump.edu.my/id/eprint/30796
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