Study of low-pressure premixed laminar n-heptane+propane/oxygen/nitrogen flames  

作　　者：YU Wu WEI LiXia MA ZhiHao HUANG ZuoHua YUAN Tao TIAN ZhenYu LI YuYang 

机构地区：[1]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China [2]National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

出　　处：《Chinese Science Bulletin》2009年第9期1477-1486,共10页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 50636040 and 50521604)

摘　　要：Low-pressure premixed laminar n-heptane+propane/oxygen/nitrogen flames were investigated with tunable synchrotron vacuum ultraviolet (VUV) photoionization and molecular-beam sampling mass spectrometry. Three flames with different mass percentage of propane in the fuel blends of 0%, 10%, and 20% were studied. The combustion intermediates were identified by comparing the measured IEs with those values in literatures. Mole fraction profiles of the main species were compared among the three flames. The experimental results provide detailed data in understanding the combustion of n-heptane and n-heptane/propane blends in engine. They are also helpful in establishing and verifying the kinetic models.Low-pressure premixed laminar n-heptane＋propane/oxygen/nitrogen flames were investigated with tunable synchrotron vacuum ultraviolet （VUV） photoionization and molecular-beam sampling mass spectrometry. Three flames with different mass percentage of propane in the fuel blends of 0%, 10%, and 20% were studied. The combustion intermediates were identified by comparing the measured IEs with those values in literatures. Mole fraction profiles of the main species were compared among the three flames. The experimental results provide detailed data in understanding the combustion of n-heptane and n-heptane/propane blends in engine. They are also helpful in establishing and verifying the kinetic models.

关 键 词：正庚烷 火焰 丙烷 混层 低压 氮 氧 真空紫外 

分 类 号：O623.11[理学—有机化学] O643.2[理学—化学]