Laminar burning characteristics of diluted n-butanol-air mixtures (PDF)
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Laminar burning characteristics of diluted n-butanol-air mixtures (PDF)
- 发表刊物：
- Combust Sci Technol
- 摘要：
- Experimental and numerical studies on laminar burning characteristics of diluted n-butanol-air premixed mixtures were conducted. Experiments were conducted using the spherically expanding flames at different dilution ratios of nitrogen at the initial pressure of 0.1 MPa and temperature of 428 K. Both measured and computed results show that with the increase of dilution ratio of nitrogen, the laminar flame speed of n-butanol-air mixtures is decreased. This is attributed to the decrease of adiabatic flame temperature of the mixtures. In addition, Effective Lewis numbers of n-butanol-air mixtures at varied dilution ratios were deduced and flame instability was analyzed. Results show that in the case of equivalence ratio less than 1.4, flame tends to stabilize with nitrogen dilution for the n-butanol-air mixture. In contrast, in the case of equivalence ratio equals to and larger than 1.4, flame tends to instabilized when mixtures are diluted with nitrogen. The measured laminar flame speeds are in good agreement with the computed laminar flame speeds at different nitrogen dilution ratios. Results show a linear relationship between the normalized laminar flame speed and nitrogen dilution ratio. Sensitivity analysis was conducted using the recently developed detailed kinetic mechanism. Results indicate that the 3-body reactions are dominant at large dilution ratio.
- 合写作者：
- Gu XL, Li QQ, Huang ZH
- 卷号：
- 2011,183(12):1360-1375
- 页面范围：
- 1360-1375
- 是否译文：
- 否
- 发表时间：
- 2011-11-13