대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제27권11호
  • /
  • Pages.1595-1603
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  • 2003
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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탄화수소 연료 액적의 연소 특성에 관한 수치해석

A Numerical Study of Combustion Characteristics of Hydrocarbon Fuel Droplet

  • 이봉수 (한국항공대학교 항공우주 및 기계공학과) ;
  • 이경재 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김종현 (경원전문대학 자동차학과) ;
  • 구자예 (한국항공대학교 항공우주 및 기계공학과)
  • 발행 : 2003.11.01
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초록

Droplet combustion at high ambient pressures is studied numerically by formulating one dimensional combustion model in the mixture of n-heptane fuel and air. The ambient pressure is supercritical conditions. The modified Soave-Redlich-Kwong state equation is used in the evaluation of thermophysical properties to account for the real gas effect on fluid p-v-T properties in high pressure conditions. Non-ideal thermodynamic and transport property at near critical and supercritical conditions are also considered. Several parametric studies are performed by changing ambient pressure and initial droplet diameter. Droplet lifetime decreased with increasing pressure. Surface temperature increased with increasing pressure. Ignition time increased with increasing initial droplet diameter. Temporal or spatial distribution of mass fraction, mass diffusivity, Lewis number, thermal conductivity, and specific heat were presented.

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참고문헌

  1. Spalding, D. B., 1959, 'Theory of Particle Combustion at high pressure,' ARS Journal, Vol. 29, pp. 828-835 https://doi.org/10.2514/8.4918
  2. Wieber, P. R., 1963, 'Calculated Temperature Histories of Vaporizing Droplets to the Critical Point,' AIAA Journal, Vol. 1, pp. 1815-1817 https://doi.org/10.2514/3.1930
  3. Jia, H. and Gogos, G., 1993, 'High Pressure Droplet Vaporization; Effects of Liquid-Phase Gas Solubility,' International Journal of Heat and Mass Transfer, Vol. 36, pp. 4419-4431 https://doi.org/10.1016/0017-9310(93)90126-Q
  4. Lazar, R. S, and Faeth, G. M., 1971, 'Bipropellent Droplet Combustion in the Vicinity of the Critical Point,' Proceedings of Thirteenth Symposium (international) on Combustion, The Combustion Institute, Pittsburgh, PA, pp. 801-811
  5. Hsieh, K. C., Shuen. J. S., and Yang, V., 1991, 'Droplet Vaporization in High Pressures Environments, I: Near-Critical Conditions,' Combustion Science and Technology, Vol. 97, pp. 111-132
  6. Shuen, J. S., Yang. V., and Hsiao, G. C., 1992, 'Combustion of Liquid-Fuel Droplets in Supercritical Conditions,' Combustion and Flame, Vol. 89, pp. 299-319 https://doi.org/10.1016/0010-2180(92)90017-J
  7. Ely, J. F. and Huber, M. L., 1992, NIST Thermodynamical Properties of Hydrocarbon Mixtures Database (SUPERTRAPP) National Institute of Standards and Technology, Standard Reference Data Program
  8. Polling, B. E., Prausnitz, J. M., and O'connell, J. P., 2001, The Properties of Gases and Liquids, 5th edition, MacGraw-HiIl
  9. Stephen R. Turns., 1996, An Introduction to Combustion, MacGraw Hill, Singapore, International editions, pp. 135-137
  10. Westbrook, C. K., and Dryer. F. L., 1981, 'Simplified Reaction Mechanisms for the Oxidation of Hydrocarbon fuels in Flames,' Combustion Science and Technology, Vol. 27, pp. 31-43 https://doi.org/10.1080/00102208108946970
  11. Graboski, M. S., and Daubert, T. E., 1978, 'A Modified Soave Equation of State for Phase Equilibrium Calculation, J. hydrocarbon Systems,' Industrial and Engineering Chemistry Process Design and Development, Vol. 17, No.4, pp. 443-448 https://doi.org/10.1021/i260068a009
  12. Takahashi, S., 1974, 'Preparation of a Generalized chart for the Diffusion Coefficients of Gases at High Pressures,' journal of Chemical Engineering of japan, Vol. 7, No.6, pp. 417-420 https://doi.org/10.1252/jcej.7.417