Laminar flame speeds and flame instabilities of pentanol isomers-air mixtures at elevated temperatures and pressures (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Laminar flame speeds and flame instabilities of pentanol isomers-air mixtures at elevated temperatures and pressures (PDF)
- 发表刊物：
- Energy & Fuels
- 摘要：
- Laminar flame speeds of three pentanol isomers (1-, 2-, 3-pentanol)-air mixtures were measured at equivalence ratios of 0.6-1.8, initial pressures of 0.10-0.75MPa and initial temperatures of 393-473K using the outwardly propagating spherical flame. A recently developed kinetic mechanism of 1-pentanol oxidation (Dagaut Model) was used to simulate the laminar flame speeds of 1-pentanol-air mixtures under experimental conditions. Comparison between simulation and measurement shows that the simulation yields good agreement on stoichiometric- and fuel-rich side, but it gives lower values on fuel-lean side. Kinetic modeling study was performed and several rate constants of selected elemental reactions were modified based on the sensitivity analysis. The modified model gives good prediction on laminar flame speed under all experimental conditions. The modified model is also validated against the jet-stirred reactor (JSR) experimental data, and it exhibits good prediction for most species. 1-pentanol gives the fastest laminar flame speed, followed by 3-pentanol, and 2-pentanol. 2-Pentanol and 3-pentanol have very close values considering the experimental uncertainty. With the increase of pressure, the difference in laminar flame speed among pentanol isomers is decreased. Flame instability of three pentanol isomers was also analyzed. 2-pentanol and 3-pentanol have similar instability behavior with close density ratio, flame thickness and Lewis number, while 1-pentanol shows slightly high instability behavior. Compared to 2-pentanol, 3-pentanol, 1-pentanol has smaller critical radius and Peclect number and this suggests its high instability behavior.
- 合写作者：
- Li QQ, Hu EJ, Zhang XY, Cheng Y, Huang ZH
- 卷号：
- 2013, 27(2): 1141-1150
- 页面范围：
- 1141-1150
- 是否译文：
- 否
- 发表时间：
- 2013-02-21