Abstract Magnesium/polytetrafluoroethylene/Viton (MTV) fuel-rich pyrolants use the atmospheric oxygen as a complementary oxidizer to sustain and alter the performance of the combustion reaction. The flame diffusion characteristics of MTV fuel-rich pyrolants in the atmospheric environment are studied by a high-speed camera (HSC). The flame temperature and combustion components are measured by using remote sensing Fourier Transform Infrared Spectrometer (FTIR). In order to obtain the combustion component distribution more accurately, an aerobic combustion model containing the oxidation reaction of the excess reactant Mg and carbonaceous species with O2 is established in this study. Eddy dissipation concept (EDC) model is applied to the numerical simulation of the three dimensional anaerobic and aerobic combustion field coupled with Realizable k-ε two-equation turbulence model. The research results show that flame temperature is mainly contributed by anaerobic combustion reaction. The flame structure obtained by the aerobic combustion model is closer to the experimental results, and the result of component distribution calculated by aerobic combustion is more consistent with characteristic spectrum. Therefore, the aerobic combustion model is more suitable for describing the actual MTV flame, and the combustion field can be divided into an anaerobic core zone and an aerobic diffusion zone.

中文翻译：

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Mg/PTFE/Viton 富燃料热解剂在大气环境中燃烧特性的实验和数值分析

摘要 镁/聚四氟乙烯/氟橡胶 (MTV) 富含燃料的热解剂使用大气氧作为补充氧化剂来维持和改变燃烧反应的性能。用高速相机 (HSC) 研究了大气环境中 MTV 富燃料热解剂的火焰扩散特性。火焰温度和燃烧成分是通过使用遥感傅里叶变换红外光谱仪（FTIR）测量的。为了更准确地获得燃烧组分分布，本研究建立了包含过量反应物Mg和含碳物质与O2的氧化反应的好氧燃烧模型。将涡耗散概念（EDC）模型结合Realizable k-ε两方程湍流模型应用于三维厌氧和好氧燃烧场的数值模拟。研究结果表明，火焰温度主要由厌氧燃烧反应贡献。好氧燃烧模型得到的火焰结构与实验结果更接近，好氧燃烧计算出的组分分布结果与特征谱更加吻合。因此，好氧燃烧模型更适合描述实际的MTV火焰，燃烧场可分为厌氧核心区和好氧扩散区。好氧燃烧模型得到的火焰结构与实验结果更接近，好氧燃烧计算出的组分分布结果与特征谱更加吻合。因此，好氧燃烧模型更适合描述实际的MTV火焰，燃烧场可分为厌氧核心区和好氧扩散区。好氧燃烧模型得到的火焰结构与实验结果更接近，好氧燃烧计算出的组分分布结果与特征谱更加吻合。因此，好氧燃烧模型更适合描述实际的MTV火焰，燃烧场可分为厌氧核心区和好氧扩散区。