Experimental and kinetic study on laminar flame speeds of formic acid
Experimental and kinetic study on laminar flame speeds of formic acid
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DOI：
10.1016/j.combustflame.2020.06.023
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发表时间：
2020-10
影响因子：
4.4
通讯作者：
G. Yin;Qunfei Gao;Erjiang Hu;Jiawei Xu;Mengliu Zhou;Zuo-hua Huang
中科院分区：
文献类型：
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作者：
G. Yin;Qunfei Gao;Erjiang Hu;Jiawei Xu;Mengliu Zhou;Zuo-hua Huang
在当量比为0.4-1.6、初始温度为423-453 K和常压下测量了甲酸的层流火焰速度。根据本实验数据验证了化学动力学模型（Glarborg模型和AramcoMech 3.0）。深动力学洞察力进行了研究，使用本模型。此外，从输运、热力学和动力学三个方面对两种模型进行了详细的分析，发现了两种模型在性能上的差异。结果表明，采用Glarborg模型模拟的层流火焰速度与实验数据吻合较好，而AramcoMech 3.0对层流火焰速度的预测明显偏高。HOCO和OCHO是甲酸层流火焰速度的驱动物种。此外，路径分析表明，甲酸消耗主要是通过与OH的提取反应，形成OCHO自由基，它迅速解离成H+CO2。
Laminar flame speeds of formic acid were measured at equivalence ratios of 0.4–1.6, initial temperature of 423–453 K and atmospheric pressure. Chemical kinetic models (Glarborg model and AramcoMech 3.0) were validated against the present experimental data. Deep kinetic insight was investigated using the present models. In addition, detailed analysis was carried out according to transport, thermal and kinetic effect to find out the totally different performance of these two models. The results show that the simulated laminar flame speeds using Glarborg model match well with experimental data while AramcoMech 3.0 apparently over predicts the laminar flame speeds. HOCO and OCHO are driving species for the laminar flame speed of formic acid. Furthermore, the pathway analysis indicates formic acid is consumed mainly by abstraction reaction with OH, forming OCHO radical, which quickly dissociates to H+CO2.