论文部分内容阅读
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.
Aiming at the entry phase of Mars landing probe into the landing process, the three-dimensional hydrodynamic Navier-Stokes equations and the chemical reaction kinetics model are solved to analyze the chemical unbalance effect when the Mars science lab enters the atmosphere of Mars. The detector The results show that CO2 decomposes largely after shock wave and consumes a large amount of energy. Under the influence of chemical non-equilibrium effect, the distance between the probe head shock wave off The vortex motion of tail vortex is weakened; the lift coefficient of detector is little changed under the influence of chemical non-equilibrium effect, the drag coefficient is higher than that of the complete gas, the lift-drag ratio is slightly lower, and the angle of attack of attack is smaller than the complete gas.