Effects of three-dimensionality on thrust production by a pitching panel.
Effects of three-dimensionality on thrust production by a pitching panel.
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DOI：
10.1017/s0022112008003583
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发表时间：
2008-11-04
影响因子：
3.7
通讯作者：
Smits AJ
中科院分区：
文献类型：
--
作者：
Green MA;Smits AJ
为了了解受生物启发的非定常低展弦比推进器的流体动力学，测量了非定常压力分布，并将其与时间平均推力性能和尾流可视化进行比较。实验是在具有不同纵横比的刚性矩形面板上进行的，以均匀的流动倾斜。面板纵横比和俯仰幅度被证明会影响面板表面压力分布的大小和时间依赖性、面板上涡度的产生以及推力产生。提出了一种新的缩放比例，其中包括这些参数并折叠了振荡压力大小和推力系数。
To understand the fluid dynamics of a biologically inspired unsteady low-aspect-ratio propulsor, unsteady pressure distributions were measured and compared with time-averaged thrust performance and wake visualizations. The experiments were performed on rigid rectangular panels with different aspect ratios, pitching in a uniform flow. Panel aspect ratio and pitching amplitude were shown to affect the magnitude and time dependence of the pressure distribution on the panel surface, the vorticity generation on the panel, and thrust production. A new scaling is proposed that includes these parameters and collapses the oscillating pressure magnitude and the thrust coefficient.