正癸烷作为航空煤油雾化过程代理燃料的研究

发布时间：2018-05-17 15:24

本文选题：航空煤油 + 正癸烷　；参考：《航空动力学报》2016年01期

【摘要】：对航空煤油和单组份碳氢燃料正癸烷的雾化性能进行实验测试,研究在部件燃烧特性验证阶段,正癸烷作为航空煤油雾化过程代理燃料的可行性.结果表明:在室温条件下,经过旋流器的气流压力降分别为0,500,2 000Pa,供油压力从0.1~1.0MPa间隔0.1MPa均匀变化,使用马尔文激光粒度仪测量旋流器下游点火器位置处两种燃料的雾化索太尔平均直径.对于两种燃料,供油压力大于0.5MPa后,SMD变化缓慢,此时两种燃料的雾化过程基本完成,雾化索太尔平均直径均介于30~45μm之间.相同气流压力降下,正癸烷的雾化SMD比航空煤油稍大,这与其更高的黏度和表面张力有关;供油压力大于0.5MPa后,两种燃料的雾化SMD非常接近.在对实验数据进行拟合分析的基础上,获得了航空煤油和正癸烷在旋流中的雾化SMD经验关系式,发现拟合系数的相对差异约为7%,可将正癸烷经过适当的修正之后做为航空煤油雾化的代理燃料.
[Abstract]:The atomization performance of aviation kerosene and one-component hydrocarbon fuel decane was experimentally tested and the feasibility of using decane as a fuel agent in aviation kerosene atomization process was studied. The results show that at room temperature, the flow pressure drop of the hydrocyclone is 0 500 ~ 2 000 Pa. the oil supply pressure varies uniformly from 0.1~1.0MPa interval 0.1MPa. The average diameter of atomized Sothell of two fuels at the location of the downstream igniter of the cyclone was measured by Ma Erwen laser particle size meter. For the two fuels, the fuel supply pressure is larger than 0.5MPa, and the SMD changes slowly. The atomization process of the two fuels is basically completed, and the average diameter of the atomized Sothel is between 30 and 45 渭 m. The atomization SMD of n-decane is slightly larger than that of aviation kerosene under the same pressure, which is related to its higher viscosity and surface tension, and the atomization SMD of the two fuels is very close when the oil pressure is larger than 0.5MPa. On the basis of fitting and analyzing the experimental data, the empirical expression of atomization SMD for aviation kerosene and decane in swirl was obtained. It is found that the relative difference of the fitting coefficient is about 7 and the n-decane can be used as the agent fuel for aviation kerosene atomization after proper modification.
【作者单位】：北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点试验室;
【基金】：国家自然科学基金(51306010) 北京市国家自然科学基金(3152020)
【分类号】：V312

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