中文摘要：

利用高速纹影摄像法和球型发展火焰研究了常温常压下丙烷-氢气-空气预混层流燃烧特性，获得了不同氢气体积分数和当量比下混合气的层流燃烧速率、Markstein数、Zeldovich数和Lewis数。结果表明：随着氢气比例的提高，层流燃烧速率增加，火焰厚度降低；当氢气体积分数小于60％时，随着当量比的增加，Markstein数降低，当氢气体积分数大于60％时，随着当量比的增加，Markstein数增加。当量比小于1．2时，随着氢气比例增加，Markstein数降低。当量比大于1．2时，随着氢气比例增加，Markstein数增加。随着氢气比例的增加，Zeldovich数降低，全局Lewis数降低。

英文摘要：

An experimental study on laminar burning characteristics of the spherically expanding premixed propane-hydrogen-air flames was conducted at room temperature and atmospheric pressure. The unstretched laminar burning velocity, the Markstein number, the Zeldovich number and the global Lewis number were obtained. The results show that the unstretched laminar burning velocity increases, the laminar flame thickness decreases with the increase of hydrogen fraction. When hydrogen fraction in the fuel is less than 60%, the Markstein number decreases with the increase of the equivalence ratio. At equivalence ratio less than 1.2, the Markstein number decreases with the increase of hydrogen fraction. In the case of lean mixture combustion, the Zeldovich number decreases with the increase of hydrogen addition. The global Lewis number decreases with the increase of hydrogen fraction.