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研究了柔性变形对扑翼空气动力学特性的影响.利用计算流体力学分析软件fluent中的动网格方法对不同形变的柔性扑翼进行数值模拟,得到了3种不同情况下扑翼的升阻力系数及涡量云图,对流场的气动特性及流场结构的变化规律进行了分析,扑翼飞行时,适度的弦向变形能增加瞬时升力,获得较大的升力,但过大的弦向变形将导致瞬时升力的减小,对扑翼飞行的气动特性产生不利的影响.
The influence of flexible deformation on the aerodynamic characteristics of flapping-wing was studied.The dynamic deformation of flexible flapping wing was numerically simulated by moving mesh method in CFD software FLUENT, and the lift resistance of flapping wing was obtained under three different conditions Coefficient and vorticity cloud chart, the aerodynamic characteristics of the flow field and the variation regularity of the flow field structure are analyzed. When the flapping wing is flying, the moderate chord deformation can increase the instantaneous lift and obtain larger lift force, but the excessive chord direction Deformation will result in a decrease in instantaneous lift, adversely affecting the aerodynamic characteristics of the flapping wing.