高超声速钝头体变熵流表面热流计算

Surface heat flux calculation of variable entropy flow for hypersonic blunt bodies

采用动量厚度来修正变熵效应的工程算法,并以15°钝锥为例,对其表面热流进行了计算,将计算结果与试验值进行了对比,结果吻合良好,表明该工程算法,方便简捷,计算量小,且有足够精度,可为高超声速飞行器初步设计热环境计算和防热材料的合理选择提供可靠的参考数据.

A engineering method, which accounts for variable entropy effects by modifying momentum thickness is described in this paper. Take a blunted 15 degrees half-angle cone for example, the results of calculating surface heat flux were compared with those of experience. The results show that the engineering method consumes less time and is workable. And also, the valuable reference data are supplied for the aero-thermal calculation in initial design and the reasonable choice in thermal protection system of hypersonic vehicle.