摘要
为了遴选出符合RP-3航空煤油物理与化学特性的模拟替代燃料,综合分析了RP-3航空煤油的物理与化学特性。针对其物理与化学特性,确定了RP-3航空煤油模拟替代燃料的遴选指标(包括摩尔质量、氢碳比、十六烷值与低热值)。针对遴选指标,提出了由正癸烷、正十二烷、异十六烷、甲基环己烷及甲苯等五种组分组成的RP-3航空煤油模拟替代燃料,并对该模拟替代燃料中各组分的摩尔分数进行了优化。同时,对比分析了不同温度下该模拟替代燃料与RP-3航空煤油的密度与运动黏度。结果表明,当该模拟替代燃料中正癸烷、正十二烷、异十六烷、甲基环己烷及甲苯的摩尔分数分别为14%、10%、30%、36%与10%时,该模拟替代燃料的摩尔质量、氢碳比、十六烷值与低热值与RP-3航空煤油的相应数据非常吻合。同时,不同温度下该模拟替代燃料的密度与运动黏度变化趋势与RP-3航空煤油吻合较好。
In order to select the surrogate fuel with the same physical and chemical properties as RP-3kerosene,the physical and chemical properties of RP-3kerosene were analyzed.According to the physical and chemical properties of RP-3kerosene,the selection criterions of the RP-3kerosene surrogate fuel（including the molecular mass,hydrogen-carbon ratio,cetane number and lower heating value）were determined.Based on the selection criterions,a five-component RP-3kerosene surrogate fuel comprising n-decane,n-dodecane,isocetane,methylcyclohexane and toluene was presented,and the mole fractions of these five components were optimized.Furthermore,the densities and kinematic viscosities of the surrogate fuel and RP-3kerosene were contrastively analyzed at different temperatures.The results show that the molecular mass,hydrogen-carbon ratio,cetane number and lower heating value of the surrogate fuel,which comprise 14%n-decane/10%n-dodecane/30%iso-cetane/36% methylcyclohexane/10% toluene（mole fraction）,agree well with the corresponding criterions of RP-3kerosene.At the same time,the variation trends of the densities and kinematic viscosities of the surrogate fuel agree well with the corresponding experimental data of RP-3kerosene at different temperatures.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2017年第10期2314-2320,共7页
Journal of Aerospace Power
基金
国家自然科学基金(51376133
51506132)
预研基金(XXQTXX)
