Measurements of laminar burning velocitires and analysis of flame stabilities for hydrogen-air-diluent mixtures (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Measurements of laminar burning velocitires and analysis of flame stabilities for hydrogen-air-diluent mixtures (PDF)
- 发表刊物：
- Chinese Science Bulletin
- 摘要：
- The laminar burning velocities and Markstein lengths of the hydrogen-air-diluent mixtures were measured at different equivalence ratios (0.4 1.5), different diluents (N2, CO2 and 5%CO2+85%N2) and dilution ratios (0, 0.05, 0.10 and 0.15) by using the outwardly expanding flame. The influences of flame stretch rate on the flame propagation characteristics were analyzed. The results show that both the laminar burning velocities and the Markstein lengths of the hydrogen-air-diluent mixtures decrease with the increase of dilution ratio. The decrease in Markstein lengths means that adding diluents into the hydrogen-air mixtures will decrease the diffusional-thermal instability of the flame front. For a specified dilution ratio, the laminar burning velocities give their maximum values at an equivalence ratio of 1.8. The Markstein lengths increase with the increase of the equivalence ratio monotonously regardless of the diluents. The study shows that CO2 as the diluent has a greater impact on the laminar flame speed and the flame front stability than N2 as the diluent
- 合写作者：
- Hu EJ, He JJ, Huang ZH, Jin C
- 卷号：
- 2009, 54(5):846-857
- 页面范围：
- 846-857
- 是否译文：
- 否
- 发表时间：
- 2009-03-02