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TECHNICAL PAPERS

Initiation of SHS Flame Induced by Another SHS Flame—Evaluation of the Ignition Energy

[+] Author and Article Information
Atsushi Makino

Department of Mechanical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561, Japane-mail: tmamaki@eng.shizuoka.ac.jp

J. Energy Resour. Technol 123(1), 70-75 (Oct 30, 2000) (6 pages) doi:10.1115/1.1345892 History: Received March 15, 2000; Revised October 30, 2000
Copyright © 2001 by ASME
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References

Frankhouser, W. L., Brendley, K. W., Kieszek, M. C., and Sullivan, S. T., 1985, Gasless Combustion Synthesis of Refractory Compounds, Noyes, Park Ridge, pp. 1–152.
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Merzhanov, A. G., 1990, “Self-Propagating High-Temperature Synthesis: Twenty Years of Search and Findings,” Combustion and Plasma Synthesis of High-Temperature Materials, eds., Z. A. Munir and J. B. Holt, VCH, New York, NY, pp. 1–53.
Varma,  A., and Lebrat,  J.-P., 1992, “Combustion Synthesis of Advanced Materials,” Chem. Eng. Sci., 47, pp. 2179–2194.
Margolis,  S. B., 1991, “The Transition to Nonsteady Deflagration in Gasless Combustion,” Prog. Energy Combust. Sci., 17, pp. 135–162.
Makino, A., and Law, C. K., 1992, “Heterogeneous Flame Propagation in the Self-Propagating High-Temperature Synthesis (SHS) Process: Theory and Experimental Comparisons,” Proceedings of the Combustion Institute, Vol. 24, The Combustion Institute, Pittsburgh, PA, pp. 1883–1891.
Makino, A., and Law, C. K., 1994, “Propagation and Diffusion-Limited Extinction of Nonadiabatic Heterogeneous Flame in the SHS Process,” Proceedings of the Combustion Institute, Vol. 25, The Combustion Institute, Pittsburgh, PA, pp. 1659–1667.
Barzykin, V. V., Merzhanov, A. G., and Strunina, A. G., 1990, “Ignition of Heterogeneous Systems Containing Condensed Reaction Products,” Proceedings of the Combustion Institute, Vol. 23, The Combustion Institute, Pittsburgh, PA, pp. 1725–1731.
Barzykin,  V. V., 1992, “Initiation of SHS Processes,” Pure Appl. Chem., 64, pp. 909–918.
Makino, A., 1999, “Dependence of the Ignition Delay Time on Various Parameters in the SHS Process Initiated by Another SHS Flame,” Proc., 5th ASME/JSME Joint Thermal Engineering Conference, March, San Diego, CA.
Kaper,  H. S., Leaf,  G. K., Margolis,  S. B., and Matkowsky,  B. J., 1987, “On Nonadiabatic Condensed Phase Combustion,” Combust. Sci. Technol., 53, pp. 289–314.
Strunina,  A. G., Vaganova,  N. I., and Barzykin,  V. V., 1977, “Energy Analysis of Ignition Process for Gasless Systems by a Combustion Wave,” Combust., Explos. Shock Waves, 13, pp. 707–715.

Figures

Grahic Jump Location
Model used for analyzing the SHS flame initiation in the specimen, induced by another SHS flame that has passed through the igniter
Grahic Jump Location
Ignition energy E as a function of the mixture ratio μig in the igniter, with the emissivity ε taken as a parameter. The specimen is stoichiometric with 10 μm radius particles (R0). Energy E0 is that supplied before arrival of the SHS flame in the igniter. 1 MJ/m2=88.1 Btu/ft2.
Grahic Jump Location
Ignition energy E for the specimen with 10 μm radius particles (R0), with the heat loss taken as a parameter—(a) as a function of the mixture ratio μsp in the specimen; (b) as a function of the degree of dilution κsp in the specimen. The mixture ratio μig in the igniter is 0.8. 1 MJ/m2=88.1 Btu/ft2.
Grahic Jump Location
Ignition energy E for the specimen when there exists heat loss for ε=1, with the particle radius (R0)sp of the specimen taken as a parameter—(a) as a function of the mixture ratio μsp in the specimen; (b) as a function of the degree of dilution κsp in the specimen. The mixture ratio μig in the igniter is 0.8. 1 MJ/m2=88.1 Btu/ft2.
Grahic Jump Location
Ignition energy E as a function of the particle radius (R0)sp, with the heat loss taken as a parameter—(a) the mixture ratio μig in the igniter is 0.8; (b) μig=0.65.1 MJ/m2=88.1 Btu/ft2.

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