【摘要】 在液态碳氢燃料添加金属纳米颗粒和凝胶剂制成高含能颗粒凝胶燃料可以有效提升燃料性能，但粒子和基液之间的微观相互作用使得凝胶燃料的物理化学特性极易在不同的流场和环境条件下发生显著变化，然而其影响机理尚不清晰。本文发展了含纳米铝颗粒的JP-10凝胶燃料的分子动力学模型，通过与实验值对比验证了模型的准确性，进一步探究了不同因素(如：温度、纳米颗粒体积分数、力场)对凝胶燃料黏度的影响。结果表明：PCFF力场比ReaxFF力场在低温范围内更适合当前凝胶燃料体系；凝胶剂的加入使黏度增大，黏度随温度升高而下降，随铝颗粒体积分数增大而增大。研究结果为高含能颗粒凝胶燃料的制备提供了理论指导和技术支撑。更多还原

【Abstract】 The addition of metal nanoparticles and gelling agents to liquid hydrocarbon fuels to create high-energy particle gel fuels can effectively enhance fuel performance.However,the microscopic interactions between particles and the base liquid make the physicochemical properties of gel fuels highly susceptible to significant variations under different flow fields and environmental conditions,yet the underlying mechanisms remain unclear.This study developed a molecular dynamics model for JP-10 gel fuel containing nano-aluminum particles.The accuracy of the model was validated by comparing it with experimental data.Further investigations were conducted on the effects of various factors(e.g.temperature,nanoparticle volume fraction,and force fields) on the viscosity of the gel fuel.The results indicate that the PCFF force field is more suitable than the ReaxFF force field for the current gel fuel system in the low-temperature range.The addition of gelling agents increases viscosity,while viscosity decreases with rising temperature and increases with higher aluminum particle volume fractions.These findings provide theoretical guidance and technical support for the preparation of high-energy particle gel fuels.更多还原