Effects of CO2, H2O, and Exhaust Gas Recirculation Dilution on Laminar Burning Velocities and Markstein Lengths of Iso-Octane/Air Mixtures
Effects of CO2, H2O, and Exhaust Gas Recirculation Dilution on Laminar Burning Velocities and Markstein Lengths of Iso-Octane/Air Mixtures
复制标题
CO2、H2O 和废气再循环稀释对异辛烷/空气混合物层流燃烧速度和马克斯坦长度的影响
DOI：
10.1080/00102202.2016.1138792
复制
发表时间：
2016
影响因子：
1.9
通讯作者：
F. Foucher
中科院分区：
文献类型：
--
作者：
C. Endouard;F. Halter;C. Chauveau;F. Foucher
摘要为了提高对球形膨胀火焰动力学机理的数值模拟，还需要一个用阴影法测量的层流燃烧速度数据库。异辛烷/空气混合物在高温（373和423 K），高压（1，3，5，和10巴），和高稀释率进行了研究，在一定范围内的当量比。CO2，H2O，和废气再循环（EGR）被用作稀释剂超过稀释范围从5到25体积%。对于这些火焰，给出了由初始压力、初始温度、稀释率和当量比得到的层流燃烧速度的显式关联式。Markstein长度也在这些条件下进行了研究。还提出了依赖于相同变量的相关性。特别注意根据稀释率提供Markstein长度相关性。
ABSTRACT A laminar burning velocities database, measured by a shadowgraph method on spherical expanding flames, is still required to improve numerical simulation of kinetic mechanism. Iso-octane/air mixtures at high temperatures (373 and 423 K), high pressure (1, 3, 5, and 10 bar), and high dilution rate were studied over a range of equivalence ratios. CO2, H2O, and exhaust gas recirculation (EGR) were used as diluent over dilution range from 5 to 25 vol%. An explicit correlation giving the laminar burning velocity from the initial pressure, the initial temperature, the dilution rate, and the equivalence ratio is proposed for those flames. Markstein length was also investigated under these conditions. A correlation depending on the same variables was also proposed. Particular attention was given to provide a Markstein length correlation depending on the dilution rate.