Viscous shock-layer solutions with coupled radiation and ablation for earth entry
Viscous shock-layer solutions with coupled radiation and ablation for earth entry
复制标题
用于进入地球的具有耦合辐射和烧蚀的粘性冲击层解决方案
DOI：
10.2514/3.26332
复制
发表时间：
1992
影响因子：
1.6
通讯作者：
K. Sutton
中科院分区：
文献类型：
--
作者：
R. Gupta;Kam;J. Moss;K. Sutton
结果获得的前体的行星探测飞行器进入地球大气层。采用粘性激波层分析，假定流动为层流并处于化学平衡。所呈现的结果包括耦合辐射和消融注射。这项研究进一步包括不同的运输和热力学性质和辐射模型的影响。刘易斯数为1.4似乎对辐射占主导地位的流动是足够的。进一步详细分析了在70公里高度上对应于不同可能轨迹点的五个速度。升华和辐射平衡壁温的情况下，有和没有耦合注入，分别采用。对于这里分析的情况，质量注入率是小的。然而，如果使用较低的高度进行空气制动和/或增加机身尺寸，则速率可能会变大。平衡结果与有限速率化学计算结果的比较表明，流场处于化学平衡状态。Kf.9 A*”
Results are obtained for the forebody of a planetary exploration vehicle entering the Earth's atmosphere. A viscous shock-layer analysis is used assuming the flow to be laminar and in chemical equilibrium. Presented results include coupled radiation and ablation injection. This study further includes the effect of different transport and thermodynamic properties and radiation models. A Lewis number of 1.4 appears adequate for the radiation-dominated flows. Five velocities corresponding to different possible trajectory points at an altitude of 70 km have been further analyzed in detail. Sublimation and radiative equilibrium wall temperatures are employed for cases with and without coupled injection, respectively. For the cases analyzed here, the mass injection rates are small. However, the rates could become large if a lower altitude is used for aerobraking and/or the body size is increased. A comparison of the equilibrium results with finite-rate chemistry calculation shows the flowfield to be in chemical equilibrium. Kf.9 A*"