Shock-Tube Experiments and Kinetic Modeling of 2-Methylfuran Ignition at Elevated Pressure

Shock-Tube Experiments and Kinetic Modeling of 2-Methylfuran Ignition at Elevated Pressure
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2-甲基呋喃高压点火的激波管实验和动力学模型

DOI:
10.1021/ef401809y
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发表时间:
2013-11
期刊:
影响因子:
5.3
通讯作者:
Huang, Zuohua
Huang, Zuohua
中科院分区:
工程技术3区
文献类型:
--
作者:
Wei, Liangjie;Tang, Chenglong;Man, Xingjia;Huang, Zuohua

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点火延迟的2-甲基呋喃的测量反射冲击波后在很宽的实验条件:当量比从0.25到2.0,平均压力从1.25到10.65巴,温度从1120到1700 K,和氧气浓度高达20%。结果表明,点火延迟期随压力的增大而减小,随稀释比的减小而减小。对于给定的稀释比,存在交叉的点火延迟时间依赖于当量比和交叉点移动到较高的温度在较高的压力。2-甲基呋喃的点火延迟的测量结果表明,在大气压下与以前的数据吻合良好。2-甲基呋喃模型NUI_MF2很好地预测了2-甲基呋喃在1.25巴下的点火延迟,但当压力升高到4.25和10.65巴时,预测不足。灵敏度分析确定了2-甲基呋喃着火过程中正丁二烯自由基(C4 H5-n)参与反应的重要性。B.
Ignition delays of 2-methylfuran were measured behind reflected shock waves over a wide range of experimental conditions: equivalence ratios from 0.25 to 2.0, average pressures from 1.25 to 10.65 bar, temperatures from 1120 to 1700 K, and oxygen concentrations up to 20%. Results show that the ignition delay decreases with increasing the pressure and decreasing the dilution ratio. For a given dilution ratio, there exists a crossover in the ignition delay time dependence upon the equivalence ratio and the crossing point shifts to the higher temperature at a higher pressure. The measured ignition delays of 2-methylfuran show good agreement with the previous data at atmospheric pressure. The 2-methylfuran model NUI_MF2 well predicts the ignition delays of 2-methylfuran at 1.25 bar but gives the underprediction when pressures are elevated to 4.25 and 10.65 bar. Sensitivity analysis identifies the importance of the reactions involving the n-butadienyl radical (C4H5-n) in the ignition process of 2-methylfuran. B...
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