Journal ArticleDOI
Dynamical Behavior of Unsteady Flowfield of an Elastically Mounted Flapping Airfoil
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This article is published in AIAA Journal.The article was published on 2018-01-24. It has received 6 citations till now. The article focuses on the topics: Flapping & Airfoil.read more
Citations
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Journal ArticleDOI
Transition to chaos in the flow-induced vibration of a pitching–plunging airfoil at low Reynolds numbers: Ruelle–Takens–Newhouse scenario
TL;DR: In this article, the transition from periodic to chaotic dynamics in the fluid-elastic response of a 2-d flexible pitch-plunge flapping airfoil with chord-wise rigidity is analyzed.
Journal ArticleDOI
An alternative simulation approach for the ONERA aerodynamic model and its application in the nonlinear aeroelastic analysis of slender wings with pylon-store system
TL;DR: In this paper, an alternative simulation approach is proposed to simplify the calculations for the ONERA model, in which the circulatory part of the OnERA model is solved analytically by using Duhamel integral method, and the corresponding aerodynamic loads can be directly expressed in the modal space of the wing motion through only introducing two additional variables.
Journal ArticleDOI
Numerical investigation of the wake transition and aerodynamic efficiency of the two-dimensional propulsive wing
TL;DR: In this paper , the authors explored the optimal working range and wake characteristics of the propulsive wing, the wake transition and aerodynamic efficiency of the Propulsive Wing in cruise, and showed that the wake structure will change greatly at high angles of attack and lead to changes in the aerodynamic performance.
Book ChapterDOI
Transitional Flow Dynamics Past a Passively Flapping Airfoil in Gusty Flow
TL;DR: In this paper, the fluid-structure interaction (FSI) framework is composed of an incompressible Navier-Stokes solver weakly coupled with a two degree-of-freedom (dof) nonlinear structural model.
Journal ArticleDOI
A complex networks based approach to nonlinear aeroelasticity
M.S. Aswathy,Sunetra Sarkar +1 more
TL;DR: In this paper , the effect of low intensity additive noise on a subcritical pitch-plunge aeroelastic system through the lens of complex networks was investigated, and the results have shown that a careful consideration of the stochastic perturbations is needed in the design and operations of such systems, and that complex networks based methods are successful in providing novel perspectives on the topology of the phase-space.
References
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Journal ArticleDOI
PIV measurements of the asymmetric wake of a two dimensional heaving hydrofoil
TL;DR: In this article, particle image velocimetry is used to examine the flow behind a two-dimensional heaving hydrofoil of NACA 0012 cross section, operating with heave amplitude to chord ratio of 0.215 at Strouhal numbers between 0.174 and 0.781 and a Reynolds number of 2,700.
Book ChapterDOI
Solution of the Navier-Stokes Equations
Joel H. Ferziger,Milovan Perić +1 more
TL;DR: In this article, the Navier-Stokes equations are treated as a generic conservation equation and the discretization principles described in Chaps. 3, 4 and 6 apply to the momentum and continuity equations.
Journal ArticleDOI
Application of fluid–structure interaction analysis to flapping flight of insects with deformable wings
TL;DR: Finite element analysis based on the arbitrary Lagrangian–Eulerian method can handle the problem accurately and investigate the loss and choose flexibility to avoid it in the design of a flapping microrobot like a dragonfly.
Journal ArticleDOI
Oscillation Frequency and Amplitude Effects on Plunging Airfoil Propulsion and Flow Periodicity
TL;DR: In this paper, the effect of varying the plunging amplitude (h) at different reduced frequencies (k) on the propulsive performance and the periodicity of the fluidflow over a plunging NACA0012 airfoil was studied using Navier-Stokes numerical simulations at a Reynolds number of 20,000.
Journal ArticleDOI
Vortex-wake interactions of a flapping foil that models animal swimming and flight
David Lentink,Florian T. Muijres,Florian T. Muijres,Frits J Donker-Duyvis,Johan L. van Leeuwen +4 more
TL;DR: These experiments show that relatively small changes in the kinematics of a flapping foil can alter the topology of the vortex wake drastically and are relevant for animal swimming and flight.