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采用一个新的非定常涡系模型来模拟三角翼大攻角俯抑振荡运动,定性地再现了水洞实验中观测到的前缘脱体涡动态性状,计算出升力随攻角变化的“滞后圈”和实验测量值定量符合,通过计算和分析,探索了产生动力学“滞后”现象的机理。
A new unsteady vortex model was used to simulate the winging oscillation of the delta wing at high angle of attack, qualitatively reproducing the dynamic characteristics of the leading edge off-body vortex observed in the water hole experiment and calculating the “hysteresis Circle ”is in accordance with the experimentally measured values. Through calculation and analysis, the mechanism of“ lagging ”kinetics is explored.