| 引用本文: | 高兴龙,张青斌,高庆玉,等.有限质量降落伞充气动力学数值模拟.[J].国防科技大学学报,2016,38(4):185-190.[点击复制] |
| GAO Xinglong,ZHANG Qingbin,GAO Qingyu,et al.Numerical simulation on finite mass inflation dynamics of parachute[J].Journal of National University of Defense Technology,2016,38(4):185-190[点击复制] |
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| 有限质量降落伞充气动力学数值模拟 |
| 高兴龙1,2, 张青斌1, 高庆玉1, 唐乾刚1, 杨涛1 |
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(1. 国防科技大学 航天科学与工程学院， 湖南 长沙 410073;2.
2. 中国空气动力研究与发展中心 设备设计及测试技术研究所， 四川 绵阳 621000)
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| 摘要: |
| 为研究空投任务中降落伞有限质量充气过程的动力学行为，基于罚函数耦合方法和网格自适应技术分析了降落伞柔性结构与周围不可压缩流场的流固耦合特性。数值模拟开伞过程伞衣三维外形变化，获得降落伞系统下落速度、阻力面积等参数；对比分析初始投放速度对降落伞开伞时间、伞衣阻力面积的影响；通过试验数据对比分析开伞力变化。计算结果表明，该方法可以有效模拟降落伞系统有限质量充气过程的动力学特性，仿真结果与试验结果相符。 |
| 关键词: 降落伞 流固耦合 有限质量充气 ALE动网格 |
| DOI：10.11887/j.cn.201604029 |
| 投稿日期：2015-11-16 |
| 基金项目:国家自然科学基金资助项目（11272345，51375486）；国防科技大学校预研计划资助项目（JC13-01-04） |
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| Numerical simulation on finite mass inflation dynamics of parachute |
| GAO Xinglong1,2, ZHANG Qingbin1, GAO Qingyu1, TANG Qiangang1, YANG Tao1 |
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(1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.
2. Facility Design and Instrumentation Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China)
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| Abstract: |
| In order to study the finite mass inflation dynamic behavior of parachute at an airdrop mission, the penalty coupling algorithm and the adaptive mesh technology were used to analyze the fluid-structure interaction characteristics between the flexible parachute structure and the surrounding incompressible flow field. The three dimensional dynamic opening profiles of parachute were numerically simulated and some parameters of parachute system like dropping velocities and drag coefficients were obtained; the influences of initial dropping velocity on filling time and drag area were compared; the trajectory was validated by the experimental data from airdrop tests. The computation results show that this method can efficiently simulate the dynamic characteristics of finite mass inflation in parachute system. The simulation results coincide with the test results. |
| Keywords: parachute fluid-structure interaction finite mass inflation ALE moving mesh |
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