Laminar burning velocity and Markstein length of nitrogen diluted natural gas-hydrogen-air mixtures at normal and reduced and elevated 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 burning velocity and Markstein length of nitrogen diluted natural gas-hydrogen-air mixtures at normal and reduced and elevated pressures (PDF)
- 发表刊物：
- Int J Hydrogen Energy
- 摘要：
- Flame propagation of premixed nitrogen diluted natural gas/hydrogen/air mixtures was studied in a constant volume combustion bomb under various initial pressures. Laminar burning velocities and Markstein lengths were obtained for the diluted stoichiometric fuel/air mixtures with different hydrogen fractions and diluent ratios under various initial pressures. The results showed that both unstretched flame speed and unstretched burning velocity are reduced with the increase in initial pressure (except when the hydrogen fraction is 80%) as well as diluent ratio. The velocity reduction rate due to diluent addition is determined mainly by hydrogen fraction and diluent ratio, and the effect of initial
pressure is negligible. Flame stability was studied by analyzing Markstein length. It was
found that the increase of initial pressure and hydrogen fraction decreases flame stability and the flame tends to be more stable with the addition of diluent gas. Generally speaking, Markstein length of a fuel with low hydrogen fraction is more sensitive to the change of initial pressure than that of a one with high hydrogen fraction.
- 合写作者：
- HY Miao, M Ji, Q Jiao, Q Huang, ZH Huang
- 卷号：
- 2009, 34(7): 3145-3155
- 页面范围：
- 3145-3155
- 是否译文：
- 否
- 发表时间：
- 2009-03-27