한국연소학회지 (Journal of the Korean Society of Combustion)

  • 제19권2호
  • /
  • Pages.21-27
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  • 2014
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  • 1226-0959(pISSN)
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  • 2466-2089(eISSN)
한국연소학회 (The Korean Society of Combustion)
권호 표지
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층류 동축류 제트 부상화염에서 부력에 의한 자기진동과 루이스 수에 의한 자기진동 비교에 관한 실험적 연구

Experimental Study on Comparison between Buoyancy Driven and Lewis Number Induced Self-excitations in Laminar Lifted Coflow-jet Flames

  • 이원준 (부경대학교 의생명융합공학협동과정) ;
  • 박정 (부경대학교 기계공학과) ;
  • 권오붕 (부경대학교 기계공학과) ;
  • 윤진한 (한국기계연구원 그린환경에너지기계본부) ;
  • 길상인 (한국기계연구원 그린환경에너지기계본부)
  • Lee, Won June (Department of Interdisciplinary Program of Marine-Bio, Electrical & Mechanical Engineering, Pukyong National University) ;
  • Park, Jeong (Department of Mechanical Engineering, Pukyong National University) ;
  • Kwon, Oh Boong (Department of Mechanical Engineering, Pukyong National University) ;
  • Yun, Jin Han (Environment & Energy Research Division, Korea Institute of Machinery and Materials) ;
  • Keel, Sang In (Environment & Energy Research Division, Korea Institute of Machinery and Materials)
  • 투고 : 2014.02.24
  • 심사 : 2014.06.19
  • 발행 : 2014.06.30
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초록

Experimental study in laminar propane coflow jet flames has been conducted to investigate self-excitations. For various propane mole fractions and jet velocities, two types of self-excitation were observed: (1) buoyancydriven self-excitation (hereafter called BDSE) and (2) Lewis-number-induced self-excitation coupled with (1) (hereafter called LCB). The mechanism of Lewis-number-induced self-excitation (hereafter called LISE) is proposed. When the system $Damk\ddot{o}hler$ number was lowered, LISE was shown to be launched. The LISE is closely related to heat loss, such that it can be launched in even helium-diluted methane coflow-jet flame (Lewis number less than unity). Particularly, The LISE becomes significant as the $Damk\ddot{o}hler$ number decreases and heat-loss is excessively large.

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참고문헌

  1. Chung, S. H. and Lee, B. J., "On the Characteristics of Laminar Lifted Flames in a Nonpremixed Jet," Combust. flame, Vol. 86, 1991, pp. 62-72 https://doi.org/10.1016/0010-2180(91)90056-H
  2. Lee, B. J. and Chung, S. H., "Stabilization of Lifted Tribrachial Flames in a Laminar Nonpremixed Jet," Combust. Flame, Vol. 109, 1997, pp. 163-182 https://doi.org/10.1016/S0010-2180(96)00145-9
  3. Chen, Y. C. and Bilger, R. W., "Stabilization Mechanisms of Lifted Laminar Flames in Axisymmetric Jet Flows," Combust. Flame, Vol. 122, 2000, pp. 377-399. https://doi.org/10.1016/S0010-2180(00)00120-6
  4. Won, S. H., Chung, S. H., Cha, M. S. and Lee, B. J., "Lifted Flame Stabilization in Developing and Developed Regions of Coflow Jets for Highly Diluted Propane," Proc. Combust. Inst., Vol. 28, 2000, pp. 2093-2099. https://doi.org/10.1016/S0082-0784(00)80618-9
  5. Won, S. H., Kim, J., Shin, M. K., Chung, S. H., Fujita, O., Mori, T., Choi, J. H. and Ito, K., "Normal and Microgravity Experiment of Oscillating Lifted Flames on Coflow," Proc. Combust. Inst., Vol. 29, 2002, pp. 37-44. https://doi.org/10.1016/S1540-7489(02)80009-8
  6. M. Furi, O. Papas, P. A. Monkewitz, "Non-premixed jet flame pulsations near extinction", Proc. Combust. Inst. Vol. 28, 2000, pp. 831-838 https://doi.org/10.1016/S0082-0784(00)80287-8
  7. S. H. Yoon, J. K. Han, J. Park, J. H. Yun, S. I. Keel., "Self-excitation in laminar lifted flames diluted with nitrogen", Combust. flame, Vol. 158, 2011, pp. 1960-1969 https://doi.org/10.1016/j.combustflame.2011.02.020
  8. S. H. Yoon, J. Park, O. B. Kwon, J. H. Yun, S. I. Keel, J. S. Kim, D. S. Bae, "Experimental study on self-excitations in nitrogen-diluted laminar lifted butane flames" Fuel, Vol. 91, 2012, pp. 51-60 https://doi.org/10.1016/j.fuel.2011.06.033
  9. Kurdyumov, V. and Matalon, M., "Stabilization and onset of oscillation of an edge-flame in the near-wake of a fuel injector", Proc. Comb. Inst., Vol. 31, 2007, 909-917. https://doi.org/10.1016/j.proci.2006.07.248
  10. Kurdyumov, V. and Matalon, M., "Dynamics of an edge flame in a mixing layer", Comb. Flame, Vol. 139, 2004, pp. 329-339. https://doi.org/10.1016/j.combustflame.2004.09.005
  11. Kurdyumov, V. and Matalon, M., "Radiation losses as a driving mechanism for flame oscillations", Proc. Comb. Inst., Vol. 29, 2002, pp. 45-52. https://doi.org/10.1016/S1540-7489(02)80010-4
  12. Tran Manh Vu, Jeong Park, Oh Boong Kwon, Dae Seok Bae, Jin Han Yun, Sang In Keel, "Effects of diluents on cellular instabilities in outwardly propagating spherical syngas-air premixed flames", International Journal of Hydrogen Energy, Vol. 35, 2010, pp. 3868-3880 https://doi.org/10.1016/j.ijhydene.2010.01.091
  13. J. Lee, S.H. Won, S.H. Jin, S.H. Chung, "Lifted flames in laminar jets of propane in coflow air", Combust. flame, Vol. 135, 2003, pp. 449-462 https://doi.org/10.1016/S0010-2180(03)00182-2
  14. Y.S Ko, S.H Chung, "Propagation of unsteady tribrachial flames in laminar non-premixed jets", Combust. flame, Vol. 118, 1999, pp. 151-163 https://doi.org/10.1016/S0010-2180(98)00154-0