| 翼型绕流干涉噪声的实验与数值研究 |
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| 引用本文： | 江旻,李晓东,周家检.翼型绕流干涉噪声的实验与数值研究[J].应用数学和力学,2011,32(6):718-729. |
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| 作者姓名： | 江旻 李晓东 周家检 |
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| 作者单位： | 北京航空航天大学 能源与动力工程学院,北京 100191 |
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| 基金项目： | 973计划资助项目(2007CB714604) |
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| 摘 要： | 来流湍流干扰噪声在风力机叶片气动总噪声级中占有重要地位．选取圆柱/翼型干涉模型从实验和数值两方面研究此类干涉发声现象．实验中通过对翼型表面非定常载荷的测量，重点研究了圆柱位置和翼型攻角的影响，选取的翼型包括两个NACA系列翼型（NACA0012和NACA0018）和两个风力机翼型（s809和s825），同时利用PIV（particle image velocimetry）技术对低攻角状态下翼型的前缘流场进行了研究．实验结果表明翼型表面非定常压力与圆柱涡脱落存在一定相关性．与此同时采用非定常Reynolds平均(URANS)方法对圆柱/NACA0012翼型的干涉流场进行了非定常数值模拟，并将得到的翼型表面压力频谱与实验结果进行了对比．
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| 关 键 词： | 圆柱/翼型干涉 URANS PIV 非定常载荷 |
| 收稿时间： | 2011-01-18 |
Experimental and Numerical Investigation on Sound Generation From Airfoil-Flow Interaction |
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| JIANG Min,LI Xiao-dong,ZHOU Jia-jian.Experimental and Numerical Investigation on Sound Generation From Airfoil-Flow Interaction[J].Applied Mathematics and Mechanics,2011,32(6):718-729. |
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| Authors: | JIANG Min LI Xiao-dong ZHOU Jia-jian |
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| Institution: | School of Jet Propulsion, Beihang University, Beijing 100191, P. R. China |
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| Abstract: | The aerodynamic noise due to the interaction of the incoming turbulence with rotating blades was one of the most important components of wind turbine noise.The rod-airfoil configuration was utilized to investigate the interaction phenomenon both experimentally and numerically.The distribution of unsteady pressure on the airfoil surface was measured for different rod positions and airfoil attack angles.Investigated in the present were two NACA airfoils,NACA0012 and NACA0018,and two wind turbine airfoils,s809... |
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| Keywords: | rod-airfoil interaction URANS PIV unsteady pressure |
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