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Numerical Studies of Combustion of Single n-Heptane Droplet

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Numerical simulations of single fuel droplet combustion have been carried out using transient finite difference method with finite rate chemistry and variable transport properties under the assumptions of spherical symmetry. The present predicted burning rate matches well with experimental data in the initial burning phase. The slope of the et law curve remains almost constant for droplet burning. The transient variations of droplet center temperature, droplet surface temperature and flame temperature are analyzed in details. The present result predicts the experimental data of flame diameter qualitatively, which can be improved further in future. The analysis of detailed structure of the droplet combustion flame simulation indicates that the thin flame approximation assumed by earlier analytical works is valid.
Słowa kluczowe
Rocznik
Strony
45--54
Opis fizyczny
Bibliogr. 15 poz., rys.
Twórcy
autor
autor
  • Department of Aerospace Engineering, Indian Institute of Technology, Kanpur-208016, India, mishra@iitk.ac.in
Bibliografia
  • [1] Kumagai, S., and Isoda, H., "Combustion of fuel droplets in a falling chamber", Sixth Symposium (Inter-national) on Combustion, 1957, pp. 726-731.
  • [2] Yang, J.C., and Avedisian, C.T., "The combustion of unsuspended heptane/hexadecane mixture droplet at low gravity", Twenty Second Symposium (lnter-national) on Combustion. 1988, pp-2037-2044.
  • [3] Chervinsky, A., "Supercritical burning of liquid droplet in stagnant environment", AIAA J., Vo1. 7, 1968,pp. 1815-1817.
  • [4] Hubbard, G.L., Denny, V.E., and Mills, A.F., "Droplet evaporation: Effects of transient and variable properties", Int. J. of Heat and Mass Transfer, Vol.18, 1975, pp- 1003-1008.
  • [5] Law, C.K., and Sirignano, W.A., "Unsteady droplet combustion with droplet heating-II: Conduction limit", Combustion and Flame, 28, 1977, pp. 175-186.
  • [6] Okajima, S., and Kumagai, S., "Further investigations of combustion of free droplets in a freely falling chamber including moving droplets", Fifteenth Symposium (Inter-national) on Combustion .. 1975, pp. 401-407.
  • [7] Cho, S.Y., Yetter, R.A., and Dryer, F.L., "A computer model for one-dimensional mass and energy transport in and around chemically reacting particles, including complex gasphase chemistry, multicomponent molecular diffusion, surface evaporation, and heterogeneous reactian", Journal of Computational Physics, 102, 1992, pp. 160-179.
  • [8] Marchese, A.J., and Dryer, F.L., "Thc effect of non luminous thermal radiation in microgravity droplet combustion", Combustion Science and Technology, Vo1.124, 1997, pp. 371-402Turns [11].
  • [9] Baek, S.W., Park, J.H., and Choi, C.E., "Investigation of drop1et combustion with nongrey gas radiation effects", Combustion Science and Technology, Vo1.l42, 1999, pp.55-79.
  • [10] Maji, A., "Numerical and Experimental Studies of Droplet Combustion", M Tech. Thesis, Department of Aerospace Engineering. IIT Kanpur, India, 2005.
  • [11] Turns, S. R., An Introduction to Combustion, McGraw-Hill, New York, 1996.
  • [12] Vargaftik, N. B., Tables on the Thermophysical Properties of Liquid and gases, 2nd Ed., Hemisphere, Washington, 1975.
  • [13] Toulokian Y. S., and Makita Tadashi, Thermophysical Properties of Matter, TPRC data series, IFI/PLENUM, New York, 1970.
  • [14] Hirschfelder, J.O., Curtiss, C.F., and Bird, R. B, Molecular theory of Gases and liquids, John Wiley and Sons, Inc, New York, 1954.
  • [15] Reid, R.C., Prausnitz, J.M., and Sherwood, T.K., The Properties of Gases and Liquids, 4th Ed., McGraw-Hill, New York, 1988.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWM4-0004-0009
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