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Numerical Simulation of a Flexible X-Wing Flapping-Wing Micro Air Vehicle
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Date
2017-07-01
Author
Deng, S.
Perçin, Mustafa
van Oudheusden, B. W.
Bijl, H.
Remes, B.
Xiao, T.
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This work is licensed under a
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Numerical simulations were performed to investigate the flowfield around a flexible flapping-wing micro air vehicle using an in-house-developed computational fluid dynamics solver. To include the dynamics of the flexible wings and its impact on the aerodynamic behavior of the micro air vehicle, the wing-deformation pattern during flapping was experimentally determined by a stereovision measurement. These data were subsequently interpolated to be employed as prescribed flapping kinematics in the numerical flow simulations, using a computational fluid dynamics solver that is based on a deformable overset-grid method. The computational results of the hovering configuration provide a quantitative prediction of the unsteady aerodynamics of the flapping-wing micro air vehicle in terms of aerodynamic force production and flow structures. The formation and evolution of the leading-/trailing-edge vortex and tip vortex were visualized. Additionally, by introducing an incoming freestream flow velocity in the simulations, the flowstructure related to the forward-flight configuration is investigated. The forces and the flow structures are compared with the experimental results from force and digital-particle-image-velocimetry measurements; a good agreement was illustrated that further evidenced the capability of the numerical methodology proposed in the present study.
Subject Keywords
Flight
,
Flows
,
Vortices
,
Aerodynamics
URI
https://hdl.handle.net/11511/36676
Journal
AIAA JOURNAL
DOI
https://doi.org/10.2514/1.j054816
Collections
Department of Aerospace Engineering, Article