To overcome the complexity associated with the development of detailed kinetic models for real transportation fuels, surrogate fuel models offer an excellent alternative. The present study reports laminar burning velocity (LBV) measurements of methylcyclohexane (MCH) + air mixtures for mixture temperatures up to 610 K using externally heated diverging channel method (EHDC) method at 1 atm pressure. MCH is a commonly used surrogate blend for aviation fuels, gasoline, and diesel, whose kinetic model is simpler to develop. The measurement of laminar burning velocity forms the basis of kinetic model development for such surrogate fuels. The present work reports the measured LBV values for an equivalence ratio range, φ = 0.7–1.4, and their comparison with available experimental data and detailed kinetic model predictions for a mixture temperature range, 353–610 K. Temperature exponent, α is derived using the power-law correlation and good consistency with kinetic model predictions is observed up to 500 K mixture temperatures. At 610 K mixture temperature, an overprediction of ≈12% at φ = 1.05 is observed with JeTSurF 2.0 (2010) model and 27% overprediction with the kinetic model of PoliMi (2014) φ = 1.1. Overall, the reported LBV measurements show slightly better match with the JeTSurF 2.0 (2010) kinetic model than the Wang (2014) kinetic model. Reaction pathway diagrams are drawn to highlight the importance of C₂H₄ and C₂H₃ radicals for an increase in the overall reaction rate at 610 K.

为克服与开发用于实际运输燃料的详细动力学模型相关的复杂性，替代燃料模型提供了一个极好的替代方案。本研究报告了在1 atm压力下使用外部加热的分流通道方法（EHDC）方法对高达610 K的混合物温度进行的甲基环己烷（MCH）+空气混合物的层流燃烧速度（LBV）测量。MCH是航空燃料，汽油和柴油的常用替代混合物，其动力学模型更易于开发。层流燃烧速度的测量形成了这种替代燃料动力学模型发展的基础。本工作报告了当量比范围φ= 0.7-1.4时测得的LBV值，并将其与可用的实验数据和混合物温度范围的详细动力学模型预测进行了比较，353–610K。温度指数，α是使用幂律相关性得出的，在高达500 K的混合温度下，与动力学模型的预测具有良好的一致性。在610 K混合温度下，使用JeTSurF 2.0（2010）模型时，在φ= 1.05时会出现≈12％的过高预测，而使用PoliMi（2014）φ= 1.1的动力学模型时，会过高预测27％。总体而言，报告的LBV测量结果显示与JeTSurF 2.0（2010）动力学模型的匹配性稍好于Wang（2014）动力学模型。绘制反应路径图以突出C的重要性 0（2010）模型和PoliMi（2014）动力学模型的27％高估φ= 1.1。总体而言，报告的LBV测量结果显示与JeTSurF 2.0（2010）动力学模型的匹配性稍好于Wang（2014）动力学模型。绘制反应路径图以突出C的重要性 0（2010）模型和PoliMi（2014）动力学模型的27％高估φ= 1.1。总体而言，报告的LBV测量结果显示与JeTSurF 2.0（2010）动力学模型的匹配性稍好于Wang（2014）动力学模型。绘制反应路径图以突出C的重要性₂ H ₄和C ₂ H ₃自由基可提高610 K下的总反应速率。