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Discrete Vortex Modeling of Inviscid Flow in Aerodynamic Flutter

机译:空气动力学扑动中的不合矩流的离散涡流建模

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Aerodynamic flutter is the unstable oscillation of a body caused by the interaction of aerodynamic forces, structural elasticity and inertial effects induced by vortex shedding. By reducing the complexities of flutter to the shedding of vortices off the tips of a two-dimensional flat plate with a torsional spring constant at its center, this phenomenon can be modeled very efficiently. A discrete vortex model of inviscid flow past a cylinder is transformed through conformal mappings to model the behavior of a flat plate in an impulsively started streamline flow. Results support the potential for utilizing flutter simulations at an early stage in the aircraft design process to mitigate the effects of flutter.
机译:空气动力颤动是由涡旋脱落诱导的空气动力,结构弹性和惯性效应的相互作用引起的身体的不稳定振荡​​。通过将颤动的复杂性降低到涡旋的缩小,在其中心的扭转弹簧恒定的二维平板的尖端中,可以非常有效地建模这种现象。通过共形映射通过共形映射来改变圆柱体的离散涡流模型,以模拟平板在冲动开始的流线流中的平板的行为。结果支持在飞机设计过程的早期阶段利用颤动模拟的可能性,以减轻颤动的影响。

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