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为了探索可变形飞行器机翼以不同方式变后掠时的气动特性差异及其物理机理,对旋转变后掠和剪切变后掠翼身组合体进行了宽广速域的绕流流场数值模拟,并对其气动特性与机理进行了分析。计算中,采用粘性可压缩流动的数值模拟方法和三棱柱-四面体的非结构-结构混合网格。结果表明:剪切变后掠具有优于旋转变后掠的特性,前者在宽广的速域内均具有显著优越的升阻比和阻力,主要原因在于不同变后掠方式所引起的流场结构的显著差异。
In order to explore the difference of aerodynamic characteristics of the deformable aircraft wing with different swept backwards and its physical mechanism, a numerical simulation of the flow around the swirling swept-back and shear-swept wing- , And analyzed its aerodynamic characteristics and mechanism. In the calculation, a numerical simulation method of viscous compressible flow and a non-structural-structural hybrid grid of triangular prism-tetrahedron are adopted. The results show that the shear sweep is better than the rotational sweptback, and the former has significantly superior lift-drag ratio and resistance in a wide range of speed, mainly due to the structure of the flow field caused by different swept-back swept modes Significant differences.