弹道学报2025，Vol.37Issue(2)：83-90,8.DOI:10.12115/ddxb.2023.12007
高超声速三维球锥模型气动热计算方法
Calculation Method for Aerodynamic Heating of Hypersonic 3D Spherically Cone Model
摘要
Abstract
The coupled aerodynamic heating and ablation deformation on the surface of hypersonic projectiles induce significant aerodynamic configuration evolution,which subsequently impacts flight stability and external ballistic performance.Therefore,multi-condition aerodynamic heating calculation method for different projectile structures,flight conditions,and environments is crucial for optimizing thermal protection system and advancing engineering applications in hypersonic projectiles.Based on the existing aerodynamic heating calculation methods for hypersonic projectiles flying at zero angles of attack,a spherical coordinate system was established in response to the stagnation point offset phenomenon induced by angles of attack in spherical cone.The conversion relationship between the projectile coordinate system and the velocity coordinate system was utilized to carry out aerodynamic heating simulation analysis of three-dimensional spherical cone shaped projectiles flying at angles of attack.The distribution of heat flux density on the busbar of the spherical head and the conical body was obtained.The heat flux density and heating status were compared with and without an angle of attack.The calculation results are basically consistent with experimental data.The simulation results show that the heat flux density of the spherical head is much higher than that of the conical body,and the heat flux density of the windward busbar with an angle of attack is greater than that of the leeward side.The calculation method used in this article can satisfy the accuracy and speed requirements for simulation and design of ultra high speed flight trajectories.The proposed calculation method and results provide a foundation for the rapid coupling calculation of aerodynamic ablation and external trajectory of hypersonic projectiles in the future.关键词
高超声速/气动热/攻角/球锥体模型Key words
hypersonic/aero-heating/angle of attack/spherically cone model引用本文复制引用
黄成,陈琦,王中原..高超声速三维球锥模型气动热计算方法[J].弹道学报,2025,37(2):83-90,8.基金项目
国家自然科学基金项目(52202475) （52202475）
江苏省自然科学基金项目(BK20200498) （BK20200498）
