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首页> 外文期刊>The Aeronautical Journal >Vortex interaction and breakdown over double-delta wings
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Vortex interaction and breakdown over double-delta wings

机译：双三角翼上的涡旋相互作用和破坏

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摘要

Modern high-speed aircraft, especially military, are very often equipped with single or compound delta wings. When such aircraft operate at high angles-of-attack, the major portion of the lift is sustained by streamwise vortices generated at the leading edges of the wing. This vortex-dominated flow field can breakdown, leading not only to loss of lift but also to adverse interactions with other airframe components such as the fin or horizontal tail. The wind tunnel and water studies described herein attempt to clarify the fluid mechanics of interaction between the strake and wing vortices of a generic 76°/40°double-delta wing leading to vortex breakdown. Some studies of passive control using fences at the apex and kink region are also described. Various diagnostic methods-laser sheet flow visualisation, fluorescent dyes, and pressure sensitive paints have been used.
机译：现代高速飞机，特别是军用飞机，经常配备有单个或复合三角翼。当这种飞机以高攻角操作时，升力的主要部分由机翼前缘处产生的沿流涡流维持。这种以涡流为主的流场可能会破裂，不仅导致升力损失，而且还导致与其他机身部件（例如鳍或水平尾翼）的不利相互作用。本文所述的风洞和水研究试图阐明导致涡旋破裂的通用76°/ 40°双三角翼机翼的涡旋和机翼涡旋之间相互作用的流体力学。还描述了在顶点和扭结区域使用围栏进行被动控制的一些研究。已经使用了各种诊断方法，例如激光薄片流动可视化，荧光染料和压敏涂料。

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