In our study, we investigate the differences between the combustion of different hydrocarbon fuels CH4, C3H8, C4H10. A numerical simulation of an impinging jet diffusion flames is used. The jet injector has a 10 mm in diameter and the distance between the jet flame and the vertical wall is 2 time half diameter. The fuel jet velocity was fixed for 11.8 m/s, corresponding to a Reynolds number of 6881. The flame characteristics varied from hydrocarbon to another for the same Reynolds number. The combustion products of CO, CO2, NO, OH, are depending on the methane and propane and butane flames for the same conditions. The temperature of the flame was varied from hydrocarbon to another the same as for the chemical species production rate. The concentration of the thermal and prompt NO pollutant depends on the temperature flow field and on the thermochemical characteristics of the hydrocarbon fuels.
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机译:在我们的研究中,我们研究了不同碳氢燃料CH4,C3H8,C4H10燃烧之间的差异。使用了撞击射流扩散火焰的数值模拟。喷射器的直径为10毫米,喷射火焰和垂直壁之间的距离为直径的2倍。燃油喷射速度固定为11.8 m / s,对应于雷诺数6881。火焰特性从碳氢化合物到另一雷诺数均相同。在相同条件下,CO,CO2,NO,OH的燃烧产物取决于甲烷,丙烷和丁烷火焰。火焰的温度从碳氢化合物变化到另一个,与化学物质的产生速率相同。一氧化氮和即时氮污染物的浓度取决于温度流场和烃类燃料的热化学特性。
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