【摘要】 燃料性能是决定远距离、大推力的推进系统效果的关键。由于实际工程应用中存在极端温度和压力，很难通过实验获得国产航空煤油JP-10的热物性参数，限制了其在航空航天领域中的应用。基于此，本文采用分子动力学模拟，探究300 K,1.48MPa条件下，不同时间步长(0.1 fs和1 fs)与不同力场(GAFF2和OPLS)对JP-10动力黏度和热导率的影响。结果表明，综合计算成本和误差各方面考虑，在1 fs下使用OPLS力场描述JP-10物性变化更为合适，为含能颗粒凝胶燃料的雾化燃烧研究提供了技术支撑。更多还原

【Abstract】 Fuel performance is the key factor in determining the effectiveness of propulsion systems for long-distance and high-thrust applications. Due to extreme temperatures and pressures in practical engineering applications, it is difficult to obtain the thermal and physical property parameters of domestic aviation kerosene JP-10 through experiments, which limits its use in aerospace fields. To address this, this study uses molecular dynamics simulations to investigate the effects of different time steps(0.1 fs and 1 fs) and different force fields(GAFF2 and OPLS) on the dynamic viscosity and thermal conductivity of JP-10 under conditions of 300 K and 1.48 MPa. The results show that,considering both the computational cost and error, using the OPLS force field with a time step of 1 fs is more suitable for describing the property changes of JP-10. This provides technical support for the study of atomized combustion of energetic particle gel fuels.更多还原