不同组分对航空煤油物性替代模型的影响
Effect of different species on physical properties for the surrogate of aviation fuel

该文旨在建立航空煤油RP-3的热物性替代模型，为换热计算与实验奠定基础。首先，通过对比已有研究中的8种航空煤油替代模型，分析各模型对比热的计算结果的影响，选择了具有代表性的直链烷烃、 环烷烃和苯类物质3类组分进行分析。其次，研究各类组分对热物性参数的影响，结果表明组分的影响主要表现在拟临界点温度处对应物性值的预测上。最后，基于理论分析比较提出了4组分物性替代模型，经实验验证，在不同压力下的比热容、 密度、 黏度3个物性计算结果与实验值符合良好。
Abstract：Thermo-physical properties for surrogate aviation kerosene RP-3 were developed in this study to lay a foundation of the further investigation of the heat transfer calculation and experiment. The specific heat calculated from different surrogate models of the RP-3 was compared with the experimental data. The effects of three kinds of species, i.e. paraffin, cycloalkanes, benzenes, on thermo-physical properties were analyzed. There are the big differences of thermal properties at pseudo-critical temperatures. Based on the previous research of surrogate models and the GC-MS analysis of RP-3, a four-species surrogate was proposed. The numerical results for thermo-physical properties were in good agreement with the experimental data, including the specific heat, density and viscosity.