航空学报2025，Vol.46Issue(18)：97-112,16.DOI:10.7527/S1000-6893.2025.31899
飞行器雷击过程的数值仿真方法
Numerical simulation methods for aircraft exposed to lightning strikes
摘要
Abstract
To meet the design requirements for lightning protection coatings on hypersonic vehicles,a numerical simulation method for lightning strike processes was developed.Under local thermodynamic equilibrium conditions,the thermodynamic and transport properties of air were calculated using the free energy minimization method.The ef-fects of Joule heating,viscous radiation,short-wavelength thermal radiation,and the Lorentz force on the magnetic confinement of the lightning channel were considered.The development of the lightning channel,variations in the ther-modynamic parameters of the channel,and the shock wave development process were investigated.The results show that the shock wave development process obtained from the numerical method aligns with experimental mea-surements.The shock wave velocity decay rate and overpressure decay rate match the theoretical predictions,with clear distinctions in shock wave attenuation characteristics before and after the transition point between strong and weak shocks.Additionally,this method is used to analyze the effects of thermal radiation,magnetic confinement,lightning discharge power,and discharge time on the lightning strike process.关键词
雷电/防雷涂层/激波/高超声速/热辐射Key words
lightning/lightning protection coating/shock wave/hypersonic/thermal radiation分类
航空航天引用本文复制引用
邱宜成,苑朝凯,韩桂来..飞行器雷击过程的数值仿真方法[J].航空学报,2025,46(18):97-112,16.基金项目
国家自然科学基金(12272385) National Natural Science Foundation of China(12272385) （12272385）
