Comparison of Flame Development in a Spark-Ignition Engine Fueled with Propane and Hydrogen
Comparison of Flame Development in a Spark-Ignition Engine Fueled with Propane and Hydrogen
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DOI：
10.1080/00102208408923778
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发表时间：
1984-07
影响因子：
1.9
通讯作者：
J. Heywood;Fernando R. Vilchis
中科院分区：
文献类型：
--
作者：
J. Heywood;Fernando R. Vilchis
本文给出了一种特殊的可视化火花点火发动机火焰纹影照片的研究结果，该照片首先以丙烷为燃料，然后以氢为燃料，在流场、释放的总能量和几何约束接近的条件下。结果表明，氢火焰的发展速度要快得多，氢火焰的周期变化要小得多，氢湍流火焰的厚度约为丙烷的1/3~1/4。结果表明，氢火焰的特征燃烧时间是丙烷的1/6，而氢的特征尺度是丙烷的0.6。这两个火焰的出现，以及它们的湍流火焰速度与其层流火焰速度的关系，都表明这两个火焰落在不同的湍流火焰区域(...
Abstract Results are presented of a study in which schlieren photographs of the flame in a special visualization spark ignition engine were taken, with first propane and then hydrogen as fuel, under conditions where the flow field, total energy released and geometric constraints were closely comparable. It is shown that the rate of development of the flame from its inception is much faster for hydrogen, that the cycle-to-cycle variations for hydrogen are substantially less, and that the thickness of the hydrogen turbulent flame is about one-third to one-quarter that of propane. Application of a wrinkled laminar flame model to these results shows that the characteristic burning time of the hydrogen flame is one-sixth that for propane, and that the characteristic scale of the wrinkling for hydrogen is 0.6 that for propane. Both the appearance of the two flames, and their turbulent flame speeds in relation to their laminar flame speeds, indicate that the two flames fall in different turbulent flame regimes (...