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火星科学实验室气动特性数值分析

DOI: 10.6052/1000-0879-12-041

Keywords: 火星大气,高超声速进入,火星科学实验室,化学非平衡,气动特性

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Abstract:

针对火星着陆探测器进入-下降-着陆过程的高超声速进入阶段,求解三维流体动力学Navier-Stokes方程与化学反应动力学模型,分析火星科学实验室进入火星大气时的化学非平衡效应、探测器周围的流场结构和气动特性在化学非平衡效应影响下的变化.结果表明,CO2在激波后大量分解,消耗大量能量;在化学非平衡效应影响下,探测器头部激波脱体距离大幅减小,尾迹旋涡运动减弱;化学非平衡效应影响下探测器升力系数变化不大,阻力系数高于完全气体,升阻比略低,配平攻角小于完全气体.

References

[1]  1 Braun RD, Manning RM. Mars exploration entry, descent and landing challenges. Journal of Spacecraft and Rockets,2007, 44 (2): 310-323
[2]  2 Wright MJ, Tang CY, Edquist KT, et al. A review of aerothermal modeling for mars entry missions. AIAA pa- per 2010-0443, 2010
[3]  3 Druguet M-C. Prediction of the flow field over an orbiter entering the Mars atmosphere. Shock Waves, 2010, 20:251-261
[4]  4 Viviani A, Pezzella G. Aerodynamic Analysis of a capsule vehicle for a manned exploration mission to Mars. AIAA paper 2009-7386, 2009
[5]  5 Mark S, Artem D, Pieter B, et al. Aerodynamic challenges for the Mars Science Laboratory entry, descent and landing. AIAA paper 2009-3914, 2009
[6]  6 Dyakonov A, Edquist K, Shoenenberger M. Influence of the angle of attack on the aerothermodynamic environment of the Mars Science Laboratory. AIAA paper 2006-3889, 2006
[7]  7 Mitcheltree RA, Gnoffo PA. Wake flow about the Mars Pathfinder entry vehicle. Journal of Spacecraft and Rock- ets, 1995, 32(5): 771-776
[8]  8 Park C, Howe J, Jaffe R, et al. Review of chemical-kinetic problems of future NASA missions, II: Mars entries. Jour- nal of Thermophysics and Heat Transfer, 1994, 8(1): 9-23
[9]  9 Kim KH, Kim C, Rho OH. Methods for the accurate computations of hypersonic flows: I. AUSMPW+ scheme. Journal of Computational Physics, 2001, 174: 38-80

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