RP-3航空煤油3组分模拟替代燃料燃烧反应机理

发布时间：2018-04-02 05:26

本文选题：RP-航空煤油　切入点：模拟替代燃料　出处：《航空动力学报》2016年09期

【摘要】：提出了一种包括65%正癸烷、10%甲苯与25%丙基环己烷3组分的RP-3航空煤油模拟替代燃料的燃烧反应机理,该机理由150种组分和591个基元反应组成.采用该燃烧反应机理对RP-3航空煤油模拟替代燃料在激波管和定容燃烧弹中的着火与燃烧特性进行数值模拟,并与相应工况实验数据进行对比分析.通过与RP-3航空煤油单组分正癸烷模拟替代燃料的燃烧反应机理进行对比分析发现:正癸烷、甲苯与丙基环己烷3组分替代燃料的燃烧反应机理对着火延迟时间的计算偏差能够控制在5%以内,对层流燃烧速度的计算偏差能够控制在10%以内,计算值明显优于正癸烷单组分替代燃料;进一步采用敏感性分析方法对3组分模拟替代燃料的燃料反应机理进行了适当修正,修正后机理对层流燃烧速度的计算偏差由10%提高到5%以内,能够更好预测所研究参数下的RP-3航空煤油的着火延迟时间和层流燃烧速度.
[Abstract]:A combustion reaction mechanism of RP-3 aviation kerosene which consists of 65% n-decane 10% toluene and 25% propyl cyclohexane 3 component is proposed.The ignition and combustion characteristics of RP-3 aviation kerosene in shock tube and constant volume combustion bomb were numerically simulated by using the combustion reaction mechanism, and the results were compared with the corresponding experimental data.By comparing the combustion reaction mechanism of RP-3 aviation kerosene with one component decane to simulate the combustion of alternative fuel, it is found that: decane,The combustion reaction mechanism of toluene and propyl cyclohexane 3 substitute fuel can control the calculation deviation of ignition delay time within 5%, and the calculation deviation of laminar combustion rate can be controlled within 10%.The calculated value is obviously better than that of decane one-component alternative fuel, and the mechanism of fuel reaction of three components simulated alternative fuels is modified by sensitivity analysis method.The modified mechanism can better predict the ignition delay time and laminar combustion rate of RP-3 aviation kerosene under the studied parameters by increasing the calculation deviation of laminar combustion rate from 10% to less than 5%.
【作者单位】：沈阳航空航天大学航空航天工程学部(院);
【基金】：国家自然科学基金(51376133) 辽宁省博士启动基金(20141076) 辽宁省教育厅科学研究一般项目(L2015404)
【分类号】：V312

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