飞行器流场的数值模拟

Numerical Simulation of Flow Field of Flying Vehicle

以“联盟”返回舱和F16战斗机为算例,利用COS MOS Flo Works在单机上完成了对简单和复杂外形的高速飞行器三维流场,表面温度以及热流分布的数值模拟.得到了返回舱再入流谱,F16“乘波”飞行时表面热流、温度以及压力分布有相似的规律,热流率高的部位对应表面温度和压力较高的部位.计算结果可为飞行器一体化优化以及热防护设计提供参考依据.

Taking the Soyuz reentry module and F16 fighter as examples, the three-dimensional flow field, surface temperature and heat flux distribution of a single high-speed flying vehicle of either the simple or complex configuration were simulated numerically by COSMOS FloWorks on PC. The flow pattern of the reentry module was calculated, and it was found that there is a similarity between the reentry module and ＂wave rider＂ F16 fighter with regard to the distributions of surface heat flux, temperature and pressure, i. e., the position where the heat flux is high corresponds to that where both the surface temperature and pressure are also high. The result can provide theoretically a reference for an integral optimization of aircraft and its design for thermal protection.