| 二维机翼非定常运动的涡流场显示--沉浮运动 |
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| 引用本文： | 王肇,宋红军,尹协振.二维机翼非定常运动的涡流场显示--沉浮运动[J].实验流体力学,2004,18(2):71-76. |
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| 作者姓名： | 王肇 宋红军 尹协振 |
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| 作者单位： | 中国科学技术大学力学和机械工程系,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目(No.10072063,10332040)和中科院知识创新工程重要研究方向资助项目(No.KJCX-SW-L014) |
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| 摘 要： | 介绍了在水洞中进行的二维机翼沉浮运动的流动显示实验.实验结果揭示了机翼正弦运动时尾迹涡街的特性以及与Strouhal数的关系;发现了在不同参数下存在三种前缘涡的形式;结合数值计算结果说明了二维机翼沉浮运动中产生非定常推力的机理.
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| 关 键 词： | 非定常运动 涡动力学 Strouhal数 流动显示 生物游泳 飞行力学 |
| 文章编号： | 1007-3124(2004)02-0071-06 |
| 修稿时间： | 2003年8月13日 |
The visualization of vortex field of unsteady motion for 2-D foil--heaving motion |
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| WANG Zhao,SONG Hong-jun,YIN Xie-zhen.The visualization of vortex field of unsteady motion for 2-D foil--heaving motion[J].Experiments and Measur in Fluid Mechanics,2004,18(2):71-76. |
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| Authors: | WANG Zhao SONG Hong-jun YIN Xie-zhen |
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| Abstract: | An experiment on the visualization of 2-D vortex field produced by a foil with heaving motion was conducted in a water tunnel.The experimental results revealed the relationship between the structure of vortex street of the foil and Strouhal number. Three types of leading edge vortices was discovered under different parameters. Finally combining with numerical calculation the mechanism for generating usteady thrust of 2-D foil's heaving motion was explained. |
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| Keywords: | unsteady motion vortex dynamics Strouhal number flow visualization biology swimming flying mechanics |
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