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An experimental study was carried out on the combustion of n-heptane droplets at atmospheric and higher pressure under normal gravity condition. Suspended droplet technique was adopted to investigate the isolated droplets. The burning rate constants were determined for each pressure and the dependence of burning rate constant on pressure was analyzed. The D2 law for droplet combustion was experimentally established. The burning rate constant was found to increase monotonically with pressure. Using back light photography and image processing techniques the flame shape and its dependence on pressure was also analyzed.
Słowa kluczowe
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Tom
Strony
17--27
Opis fizyczny
Bibliogr. 14 poz., rys.
Twórcy
autor
autor
- Combustion Lab, Department of Aerospace Engineering, Indian Institute ofTechnology, Kanpur-208016, mishra@iitk.ac.in
Bibliografia
- [1] Faeth, G.M., Current status of droplet and liquid combustion, Progress Energy Combustion Science. Volume 3, Issue 4,1977, pages 191-224.
- [2] Williams, F.A., AIAA 1981, Volume 73 of Progress in Astronautics and Aeronautics.
- [3] Law C.K. Recent advances in droplet vaporization and combustion, Progress in energy and Combustion Science, Volume 8, Issue 3, 1982, Pages 171-201
- [4] Mishra D P and A Maji, Numerica1 Studies of Combustion of Single n-Heptane Droplet, Archivum Combustionis, V27, No.1-2, pp.45-54, 2007.
- [5] Mishra D P and Majee A, Experimenta1 and Numerica1 Studies of Combustion of a Single n-Heptane Droplet, Journal of Institute of Engineers, vol 88, November, 2007, pages 3-9.
- [6] Seiichiro Kumagai and Hiroshi Isoda, Combustion of fue1 droplets in a falling chamber, Sixth Symposium (International) on Combustion,1957.
- [7] S.Kumagai, T. Sakai, S. Okajima, Combustion of free fuel droplets in a freely falling chamber, Thirteen Symposium (International) on Combustion, 1971, Pages 779-785
- [8] S.H. Chung and C. K. Law., An Experimental Study of Droplet Extinction in the Absence of External Convection, Combustion and Flame, Vol. 64, pp. 237-24, 1986.
- [9] H.Krier, JA. Wronkiewicz, Combustion of single drops of fuel, Combustion and Flame, Volume 18, Issue 2, April, Pages 159-166, 1972.
- [10] H.Isoda and S.Kumagai, New aspects of droplet combustion, Seventh Symposium (International) on Combustion, 1958, Pages 523-531.
- [11] Choi, Extinction of a free methanol droplet in microgravity, Twenty Symposium (International) on Combustion, 1991, Pages 1611-1617.
- [12] Okajima and Kumagai, Further investigations of combustion of free droplets in a freely falling chamber including moving droplets, Fifteenth Symposium (International) on Combustion, 1975, pp. 401--407.
- [13] Junichi Sato, Mitsuhiro Tsue, Mario Niwa and Michikata Kono, Effects of natural convection on high pressure combustion, Combustion and Flame, Volume 82, issue 2 November 1990, Pages 142-150.
- [14] Mishra D. P., Fundamentals of combustion, Prentice Hall of India, revised edition 2010.
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BWM4-0040-0014