Determination, correlation, and mechanistic interpretation of the effects of hydrogen addition on laminar flame speeds of hydrocarbon-air mixtures (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Determination, correlation, and mechanistic interpretation of the effects of hydrogen addition on laminar flame speeds of hydrocarbon-air mixtures (PDF)
- 发表刊物：
- Proc Combust Inst
- 摘要：
- The stretch-affected propagation speeds of expanding spherical flames of n-butane-air mixtures with hydrogen addition were measured at atmospheric pressure and subsequently processed through a nonlinear regression analysis to yield the stretch-free laminar flame speeds. Based on a hydrogen addition parameter (RH) and an effective fuel equivalence ratio (ФF), these laminar flame speeds were found to increase almost linearly with RH, for ФF between 0.6 and 1.4 and RH from 0 to 0.5, with the slope of the variation assuming a minimum around stoichiometry. These
experimental results also agree well with computed values using a detailed reaction mechanism. Furthermore, a mechanistic investigation aided by sensitivity analysis identified that kinetic effects through the global activation energy, followed by thermal effects through the adiabatic flame temperature, have the most influence on the increase in the flame speeds and the associated linear variation with RH due to hydrogen addition. Nonequidiffusion effects
due to the high mobility of hydrogen, through the global Lewis number, have the least influence. Further calculations for methane, ethene, and propane as the fuel showed similar behavior, leading to possible generalization of the phenomena and correlation.
- 合写作者：
- Tang CL, Huang ZH, CK Law
- 卷号：
- 2011, 33(1): 921-928
- 页面范围：
- 921-928
- 是否译文：
- 否
- 发表时间：
- 2011-01-06