| 多体全自由飞过程的数值模拟 |
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| 引用本文： | 李盾,纪楚群.多体全自由飞过程的数值模拟[J].空气动力学学报,2009,27(Z1). |
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| 作者姓名： | 李盾 纪楚群 |
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| 作者单位： | 航天空气动力技术研究院,北京,100074 |
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| 摘 要： | 以三维非结构粘性直角网格重构为构架,数值求解了固定空间网格瞬间运动边界的N-S方程,逼近了流场的非定常过程,结合六自由度的弹道方程,对单体或多体运动过程进行了全自由飞数值模拟,数值模拟结果和级间分离的风洞自由飞试验进行了对比,初步的计算结果说明,全自由飞数值模拟在一定程度上可以描述风洞试验的飞行轨迹,并且适应能力更强,整个全自由飞数值模拟系统可以为更复杂的单体机动飞行或多体运动过程提供快速实用的数值模拟方法.
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| 关 键 词： | 全自由飞数值模拟 三维粘性直角网格 运动边界 复杂物形 |
The numerical simulation of multi-body's free flight |
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| LI Dun,JI Chu-qun.The numerical simulation of multi-body's free flight[J].Acta Aerodynamica Sinica,2009,27(Z1). |
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| Authors: | LI Dun JI Chu-qun |
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| Abstract: | The time-dependent N-S equations at fixed grid and moving boundaries has been solved on the basis of 3-D unstructured viscous cartesian grid reconstruction technique.Coupled with 6-degree trajectory equations,monomer's and multi-body's motion have been analyzed.The simulation results have been validated by free flight test,and the results show that the flight pathway in wind tunnel test has been simulated by numerical method with better adaptability,and the numerical simulation system supply fast and utility approach for both monomer maneuver's and multi-body's motion. |
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| Keywords: | numerical simulation of multi-body's free flight 3-D viscous cartesian grid moving boundaries complex configuration |
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