To explore the reaction path,sensitive reaction and the influence law of small molecule basic element groups of RP-3 jet fuel in the negative temperature coefficient(NTC)region under different conditions,based on the detailed mechanism of CRECK small molecules,the simplified mechanism of n-dodecane,n-butylcyclohexane and n-butylbenzene was coupled by decoupling method,and then the detailed mechanism of chemical reaction kinetics of RP-3 jet fuel was constructed.Moreover,the analysis of sensitivity,component content change,and interaction path between components were performed for combustion process in the NTC region under different pressures and mass ratios of fuel to air quality.The results show that H2O2(+M)=2OH(+M)(M is third body)represents the most important ignition promoting reaction in the NTC region;under different reaction conditions,the steep drop time of O2,CH4,C2 H4 and the surge time of CO2 all show a high degree of coincidence with the ignition delay of fuel;the change of pressure and mass ratio of fuel to air quality will only affect the proportion of reaction path.
关键词
喷气燃料/多组分表征燃料/负温度系数区域/化学反应动力学/敏感性分析
Key words
jet fuel/multicomponent characterization fuel/negative temperature coefficient region/chemical reaction kinetics/sensitivity analysis
维普
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