基于CHEMKIN-PRO的多元混合气体瓦斯燃烧模拟研究
发布时间：2019-01-21 11:42
【摘要】：针对多种不同性质气体对瓦斯燃烧过程的影响问题,采用CHEMKIN-PRO软件,构建USC Mech 2.0动力学模型对不同组分C_2H_4/CO_2瓦斯混合气体燃烧过程进行了深入研究,模拟分析了不同组分C_2H_4/CO_2瓦斯层流燃烧速率及H,O自由基体积分数的变化趋势,并利用SENKIN程序对其进行了敏感性分析。计算结果表明:随着CO_2体积分数的增大,层流燃烧速率降低,在φ1和φ1.25时分别降低了约13 cm/s和149 cm/s,H,O自由基体积分数降低,其协同抑制瓦斯燃烧;随着C_2H_4体积分数的增大,层流燃烧速率略微增加,在φ1和φ1.4时分别升高了约3和46 cm/s,H,O自由基体积分数升高,其协同促进瓦斯燃烧;在φ≤1条件下,随着当量比的增加,促进CH_4生成的关键反应步的敏感性系数升高幅度较大,其抑制瓦斯燃烧。
[Abstract]:Aiming at the influence of different kinds of gases on the gas combustion process, a USC Mech 2.0 dynamic model was constructed by using CHEMKIN-PRO software to study the combustion process of different components of C_2H_4/CO_2 gas mixture gas. The variation trend of laminar combustion rate and free radical volume fraction of different components of C_2H_4/CO_2 gas was simulated and the sensitivity was analyzed by SENKIN program. The results show that the laminar combustion rate decreases with the increase of CO_2 volume fraction, and decreases about 13 cm/s and 149 cm/s,H,O free radical volume fraction at 蠁 1 and 蠁 1.25, respectively, which synergistically inhibits the gas combustion. The laminar combustion rate increased slightly with the increase of C_2H_4 volume fraction, and increased about 3 and 46 cm/s,H,O free radical volume fraction at 蠁 1 and 蠁 1 4, respectively, which synergistically promoted gas combustion. Under the condition of 蠁 鈮，
本文编号：2412634
[Abstract]:Aiming at the influence of different kinds of gases on the gas combustion process, a USC Mech 2.0 dynamic model was constructed by using CHEMKIN-PRO software to study the combustion process of different components of C_2H_4/CO_2 gas mixture gas. The variation trend of laminar combustion rate and free radical volume fraction of different components of C_2H_4/CO_2 gas was simulated and the sensitivity was analyzed by SENKIN program. The results show that the laminar combustion rate decreases with the increase of CO_2 volume fraction, and decreases about 13 cm/s and 149 cm/s,H,O free radical volume fraction at 蠁 1 and 蠁 1.25, respectively, which synergistically inhibits the gas combustion. The laminar combustion rate increased slightly with the increase of C_2H_4 volume fraction, and increased about 3 and 46 cm/s,H,O free radical volume fraction at 蠁 1 and 蠁 1 4, respectively, which synergistically promoted gas combustion. Under the condition of 蠁 鈮，
本文编号：2412634
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