壁面催化条件对气动热环境的影响研究  

Research on the Influence and Mechanisms of Catalytic Wall Condition on Aerodynamic-Heating

作　　者：李旭东[1,2] 张赋 史增民 王欣 Li Xu-dong;Zhang Fu;Shi Zeng-min;Wang Xin(Beijing Institute of Space Long March Vehicle,Beijing,100076;Hypersonic Vehicle Research Center of Thermal Protection and Insulation,Beijing,100076)

机构地区：[1]北京航天长征飞行器研究所,北京100076 [2]高超声速飞行器防隔热与热控技术中心,北京100076

出　　处：《导弹与航天运载技术》2020年第1期112-117,共6页Missiles and Space Vehicles

摘　　要：为考察再入过程中壁面催化效应对气动热环境的影响,针对高超声速热化学非平衡流动条件下不同壁面条件(全催化壁面/非催化壁面)对气动加热的影响规律展开了研究。基于热化学非平衡流动特征构造了数值算法,并通过激波-膨胀风洞中开展的高焓高超声速地面试验结果进行了验证,然后考察了不同飞行高度下和典型几何外形下不同壁面条件对气动热环境的影响并分析了其影响机制。研究结果表明在50 km的飞行高度上催化效应明显,此时全催化/非催化壁面条件下热流存在明显差异,这种差异随着高度降低而减小。To investigate the influence of catalytic wall condition to aerodynamic-heating,the effects of different wall conditions(Fully catalytic wall/Non-catalytic wall)on aerodynamic heating for hypersonic thermal-chemical non-equilibrium flow are studied.Numerical method,which is constructed according to the thermal-chemical non-equilibrium flow characteristics and verified by high enthalpy&hypersonic ground experiment results,are used to investigate the influence of different catalytic wall conditions on aerodynamic thermal environment and its intrinsic mechanism for some typical geometrical configurations and different flight heights.Study shows that there’s a significant catalytic effect when flight height is above 50km,and heat-flux under FCW/NCW differs apparently.But the difference between heat-flux und FCW/NCW reduces with flight altitude decreasing.

关 键 词：高超声速流动 真实气体效应 催化壁面 数值方法 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]