Experimental investigation of high-incidence delta-wing flow control

Experimental investigation of high-incidence delta-wing flow control
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高迎角三角翼流动控制实验研究

DOI:
10.1007/s00348-017-2408-9
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发表时间:
2017
影响因子:
2.4
通讯作者:
Christian
Christian
中科院分区:
工程技术3区
文献类型:
--
作者:
Buzica;Andrei;Bartasevicius;Julius;Breitsamter;Christian

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本文研究了细长三角形机翼布局扩展飞行包线的可能性,方法是通过沿着前缘分布的缝对的脉动射流进行主动流动控制。实验包括立体粒子图像测速以及半三角翼模型上的力和力矩测量。分析的重点是三个高发病率制度:失速前,失速,失速后。本研究还比较了不同的扰动方法:吹与空间恒定和可变参数,频率和相位。在冲角为45 °时,协调脉冲吹扫有利于最显著的流动转变。在这里,分离的剪切层重新附着在机翼的吸力面上,从而增加升力。在这种特殊情况下,相位平均流场测量描述了流动-扰动相互作用的基本物理学。
The possibility of extending the flight envelope for configurations with slender delta-shaped wings is investigated in this study by means of active flow control through pulsating jets from slot pairs distributed along the leading edge. The experiments comprise stereoscopic particle image velocimetry as well as force and moment measurements on a half-delta wing model. The analysis focuses on three high-incidence regimes: pre-stall, stall, and post-stall. This study also compares different perturbation methods: blowing with spatially constant and variable parameters, frequency and phase. At an incidence of 45, the unison pulsed blowing facilitates the most significant flow transformation. Here, the separated shear layer reattaches on the wing’s suction side, thus increasing the lift. Phase-averaged flow field measurements describe, in this particular case, the underlying physics of the flow–disturbance interaction.
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发表时间: 2008
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