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| 箔条云跨流域整体气动特性计算研究 | |
| 引用本文： | 李志辉,梁杰,李四新,王鹿受. 箔条云跨流域整体气动特性计算研究[J]. 空气动力学学报, 2011, 29(1) |
| 作者姓名： | 李志辉 梁杰 李四新 王鹿受 |
| 作者单位： | 1. 中国空气动力研究与发展中心,四川绵阳,621000;国家计算流体力学实验室,北京,100191 2. 中国空气动力研究与发展中心,四川绵阳,621000 3. 试验物理与计算数学实验室,北京,100076 |
| 基金项目： | 北京航天长征飞行器研究所仿真预研项目，国家自然科学基金重点项目 |
| 摘 要： | 研究随机动力学理论与统计散布取样技术,提出对飞行器抛撤"海量"箔条及形成箔条云有限分组随机统计模拟方法;采用所建立空气动力学理论与计算技术,提出可有效模拟稀薄流到连续流不同高度、马赫数、攻角与侧滑角及极高长细比箔条气动特性计算方法;研制飞行力学数值方法,计算确定任意时刻箔条个体团空间位置、速度;应用所发展随机动力学加权技术及概率统计分布原理,进行箔条云整体性能分析,建立箔条云跨流域飞行整体运动性能与覆盖范围统计模拟方法.对飞行器抛撒"海量"箔条形成箔条云跨流域飞行气动特性计算分析,模拟仿真结果与实验测试相吻合,证实所建立箔条及箔条云跨流域整体气动特性计算分析方法的工程实用与可靠性. |
| 关 键 词： | 箔条云 空气动力学 随机动力学 飞行力学 概率分布理论 统计计算 |
Computing study on holistic aerodynamics of chaff cloud covering various flow regimes |
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| LI Zhi-hui,HANG Jie,LI Si-xin,WANG Lu-shou. Computing study on holistic aerodynamics of chaff cloud covering various flow regimes[J]. Acta Aerodynamica Sinica, 2011, 29(1) | |
| Authors: | LI Zhi-hui HANG Jie LI Si-xin WANG Lu-shou |
| Affiliation: | LI Zhi-hui,LIANG Jie,LI Si-xin,WANG Lu-shou(1.China Aerodynamics Research & Development Center,Mianyang 621000,China,2.National Laboratory for Computational Fluid Dynamics,No.37 Xueyuan Road,100191,Beijing,3.Test Physics & Numerical Mathematic Laboratory,Beijing 100076,China) |
| Abstract: | The statistical simulation technique in random sample for the numerous chaffs and chaff-cloud released by the aerocraft is founded on the theory of stochastic dynamics and statistical diffusive sampling.Based on the aerodynamic theory and computing technique established in the recent years,the evaluating algorithm for the aerodynamic characteristic of chaff bodies with the high long and slender ratio has been developed for various altitudes,flying angles and Mach numbers from rarefied free-molecular flow to... |
| Keywords: | chaff cloud aerodynamics stochastic dynamics flying mechanics probability distribution theory statistical computation |
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