22 May 2013 Analysis of dust cloud combustion using FAST Infrared Imaging
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Abstract
Dust cloud combustion is unfortunately at risk in many working environments, jeopardizing several workers. The heat and shock waves resulting from the flame propagation into the dust cloud are harmful and lead to major endangerment or casualties. More precisely, dust cloud (small particles) explosions are even more malicious since they often result from ordinary materials such as coal, flour or pollen. Also, many metal powdered (such as aluminum oxide and magnesium) can form dangerous dust cloud when they are in suspensions in air. The understanding of this particular type of combustion is critical for the preventive care of sites and workers afflicted to such conditions. This paper presents the results of a dynamic flow analysis of metal particles combustion in a dust cloud. The ignition points, the flow rate as well as the propagation direction of the flow have been characterized using fast infrared imagery.
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Frederick Marcotte, Vincent Farley, Simon Savary, "Analysis of dust cloud combustion using FAST Infrared Imaging", Proc. SPIE 8705, Thermosense: Thermal Infrared Applications XXXV, 87050A (22 May 2013); doi: 10.1117/12.2016287; https://doi.org/10.1117/12.2016287
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