1-戊烯和2-甲基-2-丁烯的层流燃烧速率的测量

Laminar Flame Speeds of 1-Pentene and 2-Methyl-2-butene Air Mixtures

本文利用定容燃烧弹平台测量了不同初始温度(353,393和433 K)和初始压力(0.1,0.2和0.4 MPa)条件下的戊烯同分异构体(1-戊烯和2-甲基-2丁烯)的层流燃烧速率.实验结果表明1-戊烯的层流燃烧速率高于2-甲基-2-丁烯。本文对爱尔兰高威大学最新发表的戊烷同分异构体机理的1-戊烯和2-甲基-2-丁烯子机理进行了优化,利用优化后的机理进行了进一步的模拟工作。进一步的路径分析表明,1-戊烯的层流燃烧速率较2-甲基-2-丁烯快的原因主要是前者生成了较多的活性H自由基而后者生成了较多的H消耗中间产物和甲基.

Laminar flame speeds of pentene isomers （1-pentene and 2-methyl-2-butene） at initial temperatures of 353, 393 and 433 K and initial pressures of 0.1, 0.2 and 0.4 MPa were measured using a constant volume combustion bomb. Laminar flame speeds of l-pentene are faster than those of 2-methyl-2-butene. The recently published model on pentane isomers by National University of Ireland are modified by optimizing the l-pentene and 2-methyl-2-butene sub-models and the modified model was then used in the further numerical work. Further analysis indicates that the faster laminar flame speeds of l-pentene than 2-methyl-2-butene is mainly because that l-pentene produces more H radical while 2-methyl-2-butene generates more the H-consuming intermediates and CH3 radical.