【摘要】：針對多種不同性質氣體對瓦斯燃燒過程的影響問題,采用CHEMKIN-PRO軟件,構建USC Mech 2.0動力學模型對不同組分C_2H_4/CO_2瓦斯混合氣體燃燒過程進行了深入研究,模擬分析了不同組分C_2H_4/CO_2瓦斯層流燃燒速率及H,O自由基體積分數(shù)的變化趨勢,并利用SENKIN程序對其進行了敏感性分析。計算結果表明:隨著CO_2體積分數(shù)的增大,層流燃燒速率降低,在φ1和φ1.25時分別降低了約13 cm/s和149 cm/s,H,O自由基體積分數(shù)降低,其協(xié)同抑制瓦斯燃燒;隨著C_2H_4體積分數(shù)的增大,層流燃燒速率略微增加,在φ1和φ1.4時分別升高了約3和46 cm/s,H,O自由基體積分數(shù)升高,其協(xié)同促進瓦斯燃燒;在φ≤1條件下,隨著當量比的增加,促進CH_4生成的關鍵反應步的敏感性系數(shù)升高幅度較大,其抑制瓦斯燃燒。
[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，

本文編號：2412634