| 机翼低雷诺数流动的数值模拟 |
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| 引用本文： | 李建华,李锋.机翼低雷诺数流动的数值模拟[J].空气动力学学报,2007,25(2):220-225. |
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| 作者姓名： | 李建华 李锋 |
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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： | 通过SIMPLE方法求解非定常不可压N-S方程,研究了小展弦比机翼在低雷诺数下的流场特征,并分析其对气动特性的影响。研究对象为展弦比为1.0的平板矩形翼,进行了不同攻角的数值模拟,模拟雷诺数为1×105。分析表明:在小攻角时,主涡不断的从机翼上表面脱落;在大攻角时,受翼尖涡的影响,分离涡保持在机翼的背风面不脱落,形成驻涡。通过对流场分析,低雷诺数前缘层流分离和翼尖涡对小展弦比机翼的空气动力学特性起了决定性作用;使低雷诺数小展弦比矩形翼出现非定常、非对称和驻涡等现象。
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| 关 键 词： | 微型飞行器 低雷诺数流动 小展弦比机翼 |
| 文章编号： | 0258-1825（2007）02-0220-06 |
| 修稿时间： | 2006-01-192006-06-26 |
Low-Reynolds-Number numerical simulation of inverse zimmerman wing |
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| LI Jian-Hua,LI Feng.Low-Reynolds-Number numerical simulation of inverse zimmerman wing[J].Acta Aerodynamica Sinica,2007,25(2):220-225. |
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| Authors: | LI Jian-Hua LI Feng |
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| Institution: | China Academy of Aerospace Aerodynamics, Beijng 100074, China |
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| Abstract: | In this paper,the unsteady incompressible Navier-Stokes equations are solved using the pressure correction method.Using the method a series of numerical calculations are conducted to study the Low-Reynolds-Number aerodynamics of rectangular wing.Results show that low Reynolds number laminar separation and the tip vortices play an important role in the flow-field of a low-aspect-ratio rectangular wing.Which decide vortex shedding,stationary vortex,bilateral asymmetry and unsteady phenomena. |
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| Keywords: | MAVS low Reynolds number flow low-aspect-ratio wing |
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