IMECH-IR  > 力学所知识产出(1956-2008)
稀薄气体效应对高速飞行器气动性能的影响
孙泉华; 樊菁; 刘宏立; 蒋建政
Source Publication第一届高超声速科技学术会议论文集
2008
Pages12-17
Conference Name第一届高超声速科技学术会议
Conference Date2008-12-28
Conference Place中国云南丽江
Abstract高超声速飞行器在跨大气飞行时,一段时间内处在低密度的大气环境,流动具有明显的稀薄气体效应,导致飞行器的气动性能改变。本文采用直接模拟Monte Carlo方法,模拟了简单外型如三角翼形的模型飞行器在努森数为0.001到0.1的范围内以不同来流马赫数和不同飞行攻角飞行时的流场,计算了飞行器所受到的气动力和气动热,获得了稀薄气体效应对飞行器气动性能影响的一般规律。研究发现,稀薄气体流场中的激波厚度增加,激波与边界层混合可导致流场中呈现无明显激波结构;飞行器的阻力系数增加,升阻比减小,无量纲后的热传导率增加。说明稀薄气体效应降低了飞行器的气动力和气动热性能。因此高速飞行器在稀薄条件下的外形优化对于提...
Keyword稀薄气体效应 高速飞行器 直接模拟monte Carlo方法 气动性能
Department力学所
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48193
Collection力学所知识产出(1956-2008)
Recommended Citation
GB/T 7714
孙泉华,樊菁,刘宏立,等. 稀薄气体效应对高速飞行器气动性能的影响[C]第一届高超声速科技学术会议论文集,2008:12-17.
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