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CH4/CHF3/Air 예혼합 화염의 축소 반응 메카니즘 개발

The Development of a Short Reaction Mechanism for Premixed CH4/CHF3/Air Flames

  • 이기용 (안동대학교 기계공학과)
  • 투고 : 2014.02.16
  • 심사 : 2014.03.07
  • 발행 : 2014.03.31

초록

A short reaction mechanism for premixed $CH_4/CHF_3/Air$ flames was developed with a reduction method of the combined application of simulation error minimization (SEM) which included connectivity method and principal component analysis. It consisted of 43 species and 403 elementary reactions at the condition of less than 5% of maximum error. The calculation time operated with a short mechanism was over 5 times faster than one with a detailed reaction mechanism. Good agreement was found between the flame speeds calculated by the short reaction mechanism and those by the detailed reaction mechanism for the entire range of $CHF_3/CH_4$ mole ratios and equivalence ratios. In addition excellent agreements were determined for the profiles of temperature, species concentration, and the production rates of the various species. So the short reaction mechanism was able to accurately predict the flame structure for premixed $CH_4/CHF_3/Air$ flames.

키워드

참고문헌

  1. Andraea JCG, Brinckb T, Kalghatgic GT, HCCI experiments with toluene reference fuels modeled by a semidetailed chemical kinetic model, Combustion and Flame, 2008, 155, 696-712. https://doi.org/10.1016/j.combustflame.2008.05.010
  2. J. Pragera J, Najma HN, Valoranib M, Goussis DA, Skeletal mechanism generation with CSP and validation for premixed n-heptane flames, Proceedings of the Combustion Institute, 2009, 32, 509-517. https://doi.org/10.1016/j.proci.2008.06.074
  3. Wanga Q, Fanga Y, Wanga F, Lib X, Skeletal mechanism generation for high-temperature oxidation of kerosene surrogate, Combustion and Flame, 2012, 159, 91-102. https://doi.org/10.1016/j.combustflame.2011.05.019
  4. Burgress Jr DR, Zachariah MR, Tsang W, Westmoreland PR, Thermochemical and chemical kinetic data for fluorinated hydrocarbons, Prog. Energy Combust. Sci., 1996, 21, 453-529.
  5. Linteris GT, Truett L, Inhibition of premixed methane-air flames by fluoromethanes, Combustion and Flame, 1996, 105, 15-27. https://doi.org/10.1016/0010-2180(95)00152-2
  6. Linteris G, Burning velocity of 1, 1-diflurorethane (R-152a), ASHRAE Transactions, 2006, 112, 448-458.
  7. CHEMKIN-CFD, Reaction Design Inc., San Diego, CA 92121, USA, http://www.Reactiondesign.com.
  8. http://www2.galcit.caltech.edu/EDL/mechanisms/mechs/gri1.2/
  9. Nagy T, Yuranyi T, Reduction of Very Large Reaction Mechanisms Using Methods Based on Simulation Error Minimization, Combustion and Flame, 2009, 156, 417-428. https://doi.org/10.1016/j.combustflame.2008.11.001
  10. Zsely IGy, Nagy T, Simmie JM, Cirran HJ, Reduction of a Detailed Kinetic Model for the Igniton of Methane/Propane Mixtures at Gas Turbine Conditions Using Simulation Error Minimization Methods, Combustion and Flame, 2011, 158, 1469-1479. https://doi.org/10.1016/j.combustflame.2010.12.011
  11. Nagy T, Zsely IGy, Cirran HJ, Reduction of a Detailed Kinetic Model for the Igniton of Methane/Ethane/Propane Mixtures at Gas Turbine Conditions Using Simulation Error Minimization Methods, Proceedings of the European Combustion Meeting 2011, Cardfiff University, UK, June 28-July 1, 2011.
  12. Grosshandler W, Donnelly M, Womeldorf C, Lean flammability as a fundamental refrigerant property, NISTIR 6229, 1998.
  13. Smooke MD, Giovangigli V, "Formulation of the Premixed and Nonpremixed Test Problems", in Lecture Notes in Physics 384, Smooke, M.D. (Ed), Springer-Verlag, 1991.
  14. Saso Y, Zhu DL, Wang H, Law CK, Saito N, "Laminar burning velocities of trifluoromethane-methane mixtures: experiment and numeical simulation", Combustion and Flame, 1998, 114, 457-468. https://doi.org/10.1016/S0010-2180(97)00319-2
  15. Glassman I, Yetter RA, Conbustion, 4th Ed, Elsevier, 2000.
  16. Lee KY, Effects of Oxygen enrichment on the Structure of Methane/Fluorinated Compounds Premixed Flames, Transactions of KSME B, 2011, 35, 839-845.