An experimental and numerical study on characteristics of laminar premixed H2/CO/CH4/air flames

T. S. Cheng, Y. C. Chang, Y. C. Chao, G. B. Chen, Y. H. Li, C. Y. Wu

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)


The effects of variations in the fuel composition on the characteristics of H2/CO/CH4/air flames of gasified biomass are investigated experimentally and numerically. Experimental measurements and numerical simulations of the flame front position and temperature are performed in the premixed stoichiometric H2/CO/CH4/air opposed-jet flames with various H2 and CO contents in the fuel. The adiabatic flame temperatures and laminar burning velocities are calculated using the EQUIL and PREMIX codes of Chemkin collection 3.5, respectively. Whereas the flame structures of the laminar premixed stoichiometric H2/CO/CH 4/air opposed-jet flames are simulated using the OPPDIF package with the GRI-Mech 3.0 chemical kinetic mechanisms and detailed transport properties. The measured flame front position and temperature of the stoichiometric H 2/CO/CH4/air opposed-jet flames are closely predicted by the numerical calculations. Detailed analysis of the calculated chemical kinetic structures reveals that the reaction rate of reactions (R38), (R46), and (R84) increase with increasing H2 content in the fuel mixture. It is also found that the increase in the laminar flame speed with H2 addition is most likely due to an increase in active radicals during combustion (chemical effect), rather than from changes in the adiabatic flame temperature (thermal effect). Chemical kinetic structure and sensitivity analyses indicate that for the stoichiometric H2/CO/CH4/air flames with fixed H 2 concentration in the fuel mixture, the reactions (R99) and (R46) play a dominant role in affecting the laminar burning velocity as the CO content in the fuel is increased.

頁(從 - 到)13207-13217
期刊International Journal of Hydrogen Energy
出版狀態Published - 2011 10月

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術


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