A comprehensive and hierarchical optimization of a joint hydrogen and syngas combustion mechanism has been carried out. The Kéromnès et al. (Combust Flame, 2013, 160, 995–1011) mechanism for syngas combustion was updated with our recently optimized hydrogen combustion mechanism (Varga et al., Proc Combust Inst, 2015, 35, 589–596) and optimized using a comprehensive set of direct and indirect experimental data relevant to hydrogen and syngas combustion. The collection of experimental data consisted of ignition measurements in shock tubes and rapid compression machines, burning velocity measurements, and species profiles measured using shock tubes, flow reactors, and jet‐stirred reactors. The experimental conditions covered wide ranges of temperatures (800–2500 K), pressures (0.5–50 bar), equivalence ratios (ϕ = 0.3–5.0), and C/H ratios (0–3). In total, 48 Arrhenius parameters and 5 third‐body collision efficiency parameters of 18 elementary reactions were optimized using these experimental data. A large number of directly measured rate coefficient values belonging to 15 of the reaction steps were also utilized. The optimization has resulted in a H₂/CO combustion mechanism, which is applicable to a wide range of conditions. Moreover, new recommended rate parameters with their covariance matrix and temperature‐dependent uncertainty ranges of the optimized rate coefficients are provided. The optimized mechanism was compared to 19 recent hydrogen and syngas combustion mechanisms and is shown to provide the best reproduction of the experimental data.

中文翻译：

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基于优化方法的氢气与合成气联合燃烧机理的开发。

氢和合成气联合燃烧机理的全面和分级优化已经完成。Kéromnès等。（Combust Flame，2013，160，995– 1011）的合成气燃烧机理已通过我们最近优化的氢气燃烧机理进行了更新（Varga等人，Proc Combust Inst，2015，35，589–596），并使用与氢气和合成气燃烧相关的一整套直接和间接实验数据进行了优化。实验数据的收集包括在冲击管和快速压缩机中的点火测量，燃烧速度测量以及使用冲击管，流动反应器和喷射搅拌反应器测量的物种分布。实验条件涵盖了宽范围的温度（800–2500 K），压力（0.5–50 bar），当量比（ϕ= 0.3–5.0）和C / H比（0–3）。使用这些实验数据，总共优化了18个基本反应的48个Arrhenius参数和5个第三者碰撞效率参数。还利用了属于15个反应步骤的大量直接测得的速率系数值。该优化产生了H ₂ / CO燃烧机理，该机理适用于多种条件。此外，还提供了新的推荐速率参数及其协方差矩阵和优化速率系数的温度相关不确定性范围。将优化的机制与19种最新的氢气和合成气燃烧机制进行了比较，结果表明该机制可提供最佳的实验数据再现性。