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Numerical Simulation of the Orion CEV Reentry Vehicle

机译:Orion CEV再入飞行器的数值模拟

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Aerothermodynamics analysis of the Orion crew exploration vehicle (CEV) reentry vehicle at high altitude has been studied numerically. At high altitude in the rarefied flow regime noncontinuum technique such as direct simulation Monte Carlo (DSMC) method is used to solve the Boltzmann equation of kinetic theory. Results are reported at different altitudes in the rarefied regime for ideal gas and real gas model. The effects of nose radius and free stream velocity are presented. The estimation of bow shock strength and peak surface heat flux is higher for ideal gas compared with real gas model. The flow field characteristics have shown significant change with decrease in altitude and increase in free stream velocity. Present results are matching well with the results available in the literature. (C) 2014 American Society of Civil Engineers.
机译:数值研究了猎户座乘员飞行器(CEV)再入飞行器在高空的空气热力学分析。在稀疏流态下的高空,非连续性技术(例如直接模拟蒙特卡罗(DSMC)方法)用于求解动力学理论的玻尔兹曼方程。在理想的气体和实际气体模型的稀疏条件下,在不同的高度上报告了结果。给出了机头半径和自由流速度的影响。与理想气体模型相比,理想气体的弓形冲击强度和峰值表面热通量估计更高。流场特性已经显示出随着高度的降低和自由流速度的增加而发生的显着变化。目前的结果与文献中的结果非常吻合。 (C)2014年美国土木工程师学会。

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