Static Stall Hysteresis of Low-Aspect-Ratio Wings
Static Stall Hysteresis of Low-Aspect-Ratio Wings
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DOI：
10.2514/6.2014-2014
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
M. Mizoguchi;Y. Kajikawa;H. Itoh
中科院分区：
文献类型：
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作者：
M. Mizoguchi;Y. Kajikawa;H. Itoh
在雷诺数为1.0× 10 ~ 1.5× 10 ~ 4范围内，对矩形小展弦比机翼的气动特性进行了实验研究。分析了壁厚比、雷诺数和湍流强度对迟滞环的影响，揭示了静态失速迟滞现象的发生条件。在低雷诺数下，随着壁厚比的减小，失速时的滞后现象明显。当机翼具有相对较大的厚度时，滞后消失。雷诺数也影响失速角和滞后区的跨度。随着湍流强度的减小，迟滞环增大，而气动性能几乎不变。
The aerodynamic characteristics of rectangular, low-aspect-ratio wings are experimentally investigated at Reynolds numbers ranging from 1.0× 10 to 1.5× 10. The effects of the thickness ratio, the Reynolds number, and the turbulence intensity on the hysteresis loop are analyzed to reveal the occurrence conditions of static stall hysteresis. The hysteresis at stall is pronounced as the thickness ratio decreases at low Reynolds numbers. The hysteresis disappears when the wing has a relatively large thickness. The Reynolds number also affects the stall angle and the span of the hysteresis region. The hysteresis loop enlarges with a decrease in the turbulence intensity, whereas the aerodynamic performance is nearly unchanged.