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Numerical Simulation of a Flapping Wing in Ansys-Fluent Based on the Fruit Fly Wing Kinematics

机译:基于果蝇翼运动学的ANSYS-FLUENT扑翼数值模拟

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This document describes the aerodynamic analysis of fruit fly 'Drosophila Melanogaster' flapping wings for a hovering configuration and symmetric movement of trajectories including phase difference. Computational Fluid Dynamics CFD is applied to understand the kinematics behavior and the flapping phenomenon. The simulation was performed in 2D employing the ANSYS? FLUENT, Academic Research software, replicating, in standard conditions, an elliptical geometry of 3% thickness in an O-type computational grid; a laminar, incompressible and unstable fluid was used, with a Reynolds number of 151, evaluating cases with angles of attack of 25°, 35° and 45°. Once results were obtained, the physical effects present in this type of flight such as the Kramer and Wagner effects, Karman and Leading Edge vortices, and wake capture, were identified using detailed vortex contours throughout the flight cycles studied, giving insight of lift and drag coefficients tendency as well as the increase in vortex generation as the angle of attack is augmented, followed by an analysis and comparison with experimental and simulation data obtained from previous researches in order to validate the methodology applied in this study.
机译:本文档描述了果蝇'果蝇Melanogaster'扑振翅膀的空气动力学分析,用于悬停配置和轨迹的对称运动,包括相位差。计算流体动力学CFD应用于了解运动学行为和扑振现象。模拟在使用ANSYS的2D中进行?流利,学术研究软件,在标准条件下复制,在O型计算网格中的3%厚度的椭圆形几何形状;使用层状,不可压缩和不稳定的流体,雷诺数为151,评估攻击角度为25°,35°和45°的情况。一旦获得结果,在这种类型的飞行中存在的物理效果如克拉姆和摇摆效果,Karman和前沿涡流以及在整个飞行周期中使用的详细涡旋轮廓识别出来的,提供升力和拖曳的洞察力随着从以前研究获得的实验和模拟数据,增加系数趋势以及随后的涡流产生的增加,随后是与先前研究中获得的实验和模拟数据的分析和比较,以便验证本研究中应用的方法。

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