Effect of diluent gas on flame stability of laminar combustion of premixed hydrogen enriched natural gas and air mixtures

Hai Yan Miao, Qi Jiao, Zuo Hua Huang, De Ming Jiang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The laminar flame propagating process of natural gas-hydrogen-diluent gas-air was studied in a constant volume combustion bomb with the initial pressure of 0.1, MPa and the initial temperature of 285 K. Markstein lengths were obtained at various hydrogen fractions, diluent ratios and equivalence ratios. Effects of nitrogen and CO2 diluent gas on flame stability were analyzed separately and then compared based on the measured Markstein length and schlieren photos. The results show that Markstein length decreases with the increase of hydrogen fraction. Markstein length can either increase or decrease with the increase of diluent ratio, depending on hydrogen fraction and equivalence ratio. It is also found that CO2 has greater effect on flame stability than nitrogen.

Original languageEnglish
Pages (from-to)220-224
Number of pages5
JournalRanshao Kexue Yu Jishu/Journal of Combustion Science and Technology
Volume16
Issue number3
Publication statusPublished - 1 Jun 2010
Externally publishedYes

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