降落伞开伞过程的多结点模型仿真

潘星; 曹义华

降落伞开伞过程的多结点模型仿真

潘星,
曹义华

北京航空航天大学航空科学与工程学院, 北京 100083

基金项目: 国家自然科学基金资助项目(10577003)

详细信息

中图分类号: V 244.21⁺6
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出版历程
- 收稿日期: 2007-01-24
- 网络出版日期: 2008-02-29

Simulation of parachute-s opening process with multi-node model

Pan Xing,
Cao Yihua

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 根据降落伞的结构和力学特征,在轴对称假设下创建了伞衣及回收物系统的多结点结构模型.通过考虑应力,重力和气动力的作用效果,建立了用于无气流攻角平面圆形降落伞充气模拟的多结点结构模型动力学方程组.对开伞过程中的流场变化引入准定常假设,利用simple算法数值模拟求解RNG(Renormalization Group)k-ε湍流模型下的雷诺平均N-S(Navier-Stokes)方程以获得选定时刻的伞衣表面压力分布.结合多结点模型动力学方程组的解算代码和计算流体力学程序,采用流固耦合的方法对选定的平面圆形降落伞模型的开伞过程进行了动态仿真,得到了开伞过程中降落伞外形和特性的变化.通过结果分析和比较,证明了多结点模型的可行性,发展出了一种用于降落伞流固耦合计算的新方法.
- 降落伞 /
- 可充气装置 /
- 计算流体动力学 /
- 流固耦合 /
- 仿真
Abstract: Multi-node model of canopy and parachute system under axisymmetrical hypothesis was set up according to their structural and mechanics characteristics. Dynamics equations of this model for simulating inflation process of flat circular parachute with no angle of attack have been constructed by considering the effect of stress, gravity and pressure. On the assumption that the evolvement of fluid field is quasi-steady, the pressure values on the canopy at selected moments were calculated out by solving RANS(Reynolds averaged navier-stokes) equations of RNG(renormalization group) k-ε turbulence model with simple algorithm. With the combination of dynamics equations code and CFD(computational fluid dynamics) program, the fluid-structure interaction study of a selected parachute was carried out, and the change of its shape and characteristics was simulated. The feasibility of multi-node model is confirmed by analyzing calculated results and comparing them with those from some other researches. A new method to study the fluid-structure interaction of parachute is established.
- parachutes /
- inflatable equipment /
- computational fluid dynamics(CFD) /
- fluid-structure interaction /
- simulation

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[1] 朱侣蟾译.平面圆形伞充满时的力、应力和形状的近似计算[J].空降技术, 1983(1): 143-177 Translated by Zhu Lüchan. An approximate approach to calculate drag, stress and deformation of inflated flat circular parachute[J]. Landing Technology, 1983(1):143-177(in Chinese) [2] 连淇祥, 周民选. 凹半球降落伞模型在加速和定常流中的流场观测 . 航空学报, 1988, 9(1): 84-90 Lian Qixiang, Zhou Minxuan. Experimental investigation on rigid hollow hemispherical parachute model in accelerating and steady flow[J]. Acta Aeronautica et Astronautica Sinica, 1988, 9(1): 84-90(in Chinese) [3] Macha J M. A simple, approximate model of parachute inflation .AIAA-93-1206, 1993 [4] Watkins J W.A total energy method to predict parachute canopy inflation forces .AIAA-2003-2166, 2003 [5] Lee C K, Lanza J,Buckley J. Experimental investigation of clustered parachutes inflation . AIAA-97-1478, 1997 [6] Doherr K F. Extended parachute opening shock estimation method . AIAA-2003-2173, 2003 [7] 余莉,明晓,胡斌.降落伞开伞过程的试验研究[J].南京航空航天大学学报,2006, 38(2):176-180 Yu Li, Ming Xiao, Hu Bin. Experiment investigation in parachute opening process[J].Journal of Nanjing University of Aeronautics and Astronautics, 2006, 38(2):176-180(in Chinese) [8] 王利荣.降落伞理论与应用[M].北京:中国宇航出版社, 1997:287-320 Wang Lirong. Parachute: theory and application [M]. Beijing: China Astronautics Publishing House, 1997:287-320 (in Chinese) [9] 蒋崇文,曹义华,苏文翰.对称面圆周角对轴对称降落伞流场特性的影响[J].北京航空航天大学学报,2006, 32(3):271-275 Jiang Chongwen, Cao Yihua, Su Wenhan. Influence of circular angle in symmetric plane to the flow field characteristics of an axisymmetric parachute[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(3):271-275(in Chinese) [10] 彭勇, 张青斌, 程文科,等.降落伞初始充气阶段数值模拟 .中国空间科学技术, 2003(3):7-12 Peng Yong, Zhang Qingbin, Cheng Wenke, et al. Simulation of parachute initial inflation phase[J]. Chinese Space Science and Technology, 2003(3):7-12(in Chinese) [11] 张青斌,彭勇,程文科,等.降落伞拉直过程的质量阻尼弹簧模型[J].弹道学报,2003, 15(1):31-36 Zhang Qingbin, Peng Yong, Cheng Wenke, et al. A mass-spring model with damping to simulate the snatch process of parachute[J]. Journal of Ballistics,2003, 15(1):31-36(in Chinese)

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