Vortical patterns in the wake of an oscillating airfoil
Vortical patterns in the wake of an oscillating airfoil
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DOI：
10.2514/3.10246
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发表时间：
1987-03
期刊：
影响因子：
2.5
通讯作者：
M. Koochesfahani
中科院分区：
文献类型：
--
作者：
M. Koochesfahani
本文研究了NACA0012翼型在低速水槽中小振幅俯仰时尾流的旋涡流态。结果表明，通过控制振荡波形的频率、幅值和形状，可以对尾流结构进行很大程度的控制。本研究中的一个重要观察结果是，沿尾涡核心沿着存在轴向流。轴向流的大小的估计表明振荡频率和振幅的线性依赖。
The vortical flow patterns in the wake of a NACA 0012 airfoil pitching at small amplitudes are studied in a low speed water channel. it is shown that a great deal of control can be exercised on the structure of the wake by the control of the frequency, amplitude and also the shape of the oscillation waveform. An important observation in this study has been the existence of an axial flow along the cores of the wake vortices. Estimates of the magnitude of the axial flow suggest a linear dependence on the oscillation frequency and amplitude.