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Title of Journal: J Mech Sci Technol

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Abbravation: Journal of Mechanical Science and Technology

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Korean Society of Mechanical Engineers

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DOI

10.1007/s10822-014-9748-9

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ISSN

1976-3824

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A comparative study of the ignition and burning ch

Authors: Jihwan Lim Sanghyup Lee Woongsup Yoon
Publish Date: 2014/10/22
Volume: 28, Issue: 10, Pages: 4291-4300
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Abstract

Ignition and the burning of airborn single aluminum and magnesium particles are experimentally investigated Particles of 30 to 106 μmdiameters were electrodynamically levitated ignited and burnt in atmospheric air The particle combustion evolution was recorded by highspeed cinematography Instant temperature and thermal radiation intensity were measured using twowavelength pyrometry and photomultiplier tube methods Ignition of the magnesium particle is prompt and substantially advances the aluminum particle by 10 ms Burning time of the aluminum particles is extended 3 to 5 times longer than the magnesium particles Exponents of a powerlaw fit of the burning rates are 155 and 124 for aluminum and magnesium particles respectively Flame temperature is slightly lower than the oxide melting temperature For the aluminum dimensionless flame diameter is inert to the initial particle size but for the magnesium inversely proportional to the initial diameterJihwan Lim received his BS degree in Aerospace Engineering from Inha University in 2005 He is currently a PhD candidate in School of Mechanical Engineering Yonsei University Korea His research interests are in the area of metal combustion and combustion diagnosticsSanghyup Lee received his BS degree in Department of Astronomy from Yonsei University in 2009 He is currently a PhD student in School of Mechanical Engineering Yonsei University Korea His research interests are in the area of Metal Combustion and Combustion DiagnosticsWoongsup Yoon is a professor in School of Mechanical Engineering at Yonsei University He received his PhD in Department of Mechanical and Aerospace Engineering from University of Alabama in Huntsville His research interests are in the combustion phenomenon

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