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通过对三角翼上漩涡破裂形态及涡破裂过程的流态变化的分析 ,可以得到以下结论。在三角翼上 ,除了通常知道的螺旋破裂核泡状破裂之外 ,还有双螺旋、涡丝以及蛙跳另外 3种破裂形态。涡破裂是一个非定常过程 ,在机翼形状、迎角及来流条件不变的情况下 ,通常可以看到涡破裂形态的变化 ,即从螺旋破裂逐渐转化成泡状破裂又返回到螺旋破裂的过程。泡状破裂可以认为是螺旋破裂的一种特殊阶段。它与螺旋破裂并没有本质上的区别。从形态上看 ,泡状破裂中会出现涡核分叉 ,涡核中分离出一些带有涡量的流体微团 ,但总有一根涡丝 (一部分涡核 ) ,自始至终存在 ,它或者表现成螺旋形态 ,或者由于自身的诱导形成了较复杂的缠绕形态。
Through the analysis of the vortex rupture pattern on the delta wing and the flow pattern change during the vortex rupture, the following conclusions can be drawn. In the delta wing, in addition to the commonly known helical rupture nuclear bubble rupture, there are three other types of rupture: double helix, vortex wire and leapfrog. Vortex rupture is an unsteady process. In the condition of wing shape, angle of attack and inflow, the change of vortex rupture can usually be seen, from spiral rupture to bubble rupture and back to spiral rupture the process of. Bubble rupture can be considered a special stage of spiral rupture. It is not essentially different from a spiral rupture. From the morphological point of view, there will be vortex branching in the bubble-shaped rupture. Some vortex micelles are separated from the vortex core, but there is always one vortex filament (a part of the vortex nucleus), which exists from beginning to end. Spiral form, or due to its own induction to form a more complex winding morphology.