均三甲苯层流燃烧特性实验

为了深入了解均三甲苯的层流燃烧特性及影响因素，利用高速纹影技术和定容燃烧弹开展了相关研究，得到了不同初始条件下的层流燃烧速度和Markstein长度等参数，结合均三甲苯化学反应机理揭示了不同初始条件下导致层流燃烧速度变化的关键基元反应,进而得到了不同初始条件下均三甲苯/空气的层流燃烧速度拟合经验公式，最后对拟合公式进行了验证表明该经验公式能较为准确地预测不同初始条件下均三甲苯/空气的层流燃烧速度。研究结果表明:均三甲苯/空气的层流燃烧速度与预混气体的初始温度呈正相关，与初始压力呈负相关；Markstein长度与预混气体的初始温度和初始压力均呈负相关。 

Experiment of laminar combustion characteristics of 1,3,5 trimethylbenzene

In order to investigate the laminar combustion characteristics of 1,3,5 trimethylbenzene and influence factors, the high speed schlieren technology and constant combustion bomb technology were used to carry out some experiments. The Markstein length and laminar burning speed were obtained under different initial conditions; in combination with the mechanism of the reaction of 1,3,5 trimethylbenzene, it revealed the key elemental reactions leading to the change of laminar burning speed under different initial conditions, and the fitting formula of laminar burning speed was built at different initial pressures and initial temperatures. The accuracy of the fitting formula was verified, and the laminar burning speed of 1,3,5 trimethylbenzene/air mixture under different initial conditions was calculated. The results show that the laminar burning speed of 1,3,5 trimethylbenzene/air mixture increases with the increase of initial temperature, and decreases with the increase of initial pressures, while Markstein length decreases with the increase of initial pressure and initial temperature.