Journal ArticleDOI
Fluid structures of flapping airfoil with elliptical motion trajectory
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TLDR
In this paper, the effect of elliptical motion trajectory on the aerodynamic characteristics and propulsive performance of a flapping airfoil is evaluated, where a periodic horizontal motion (forward/backward) is combined with vertical motion (upward/downward) of the airframe to introduce a new kinematic parameter.About:
This article is published in Computers & Fluids.The article was published on 2015-02-15. It has received 37 citations till now. The article focuses on the topics: Aerodynamic center & Airfoil.read more
Citations
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Journal ArticleDOI
Lift performance enhancement for flapping airfoils by considering surging motion
TL;DR: In this paper , a surging motion is added to an airfoil performing pitching-plunging combined motion to figure out how it influences the lift performance and flow pattern of flapping airfoils.
Journal ArticleDOI
Energy extraction performance of tandem flapping foil undergoing elliptical motion trajectory
TL;DR: In this paper , the authors investigated the energy extraction performance of tandem flapping by varying the flapping trajectory and position between the foils at a Reynolds number of 1173, and found that with an elliptical motion trajectory pattern and an inter-foil spacing of 1.5 cm-2cm, the energy efficiency was improved.
Proceedings ArticleDOI
Numerical Investigation of Elliptical Motion on Propulsion Performance of a Flapping Hydrofoil
TL;DR: In this article, the authors proposed an elliptical motion on a flapping hydrofoil for propulsion instead of the traditional two degrees of freedom motion, plunging/pitching motion.
Journal ArticleDOI
Performance of Semi-Active Flapping Hydrofoil with Arc Trajectory
TL;DR: In this paper , the authors investigated the working characteristics and hydrodynamic performance of a semi-active flapping foil with a circular arc track and showed that the maximum angle of attack is the key factor affecting the efficiency of this flapping-foil propulsion system.
References
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Book
Computational methods for fluid dynamics
Joel H. Ferziger,Milovan Perić +1 more
TL;DR: This text develops and applies the techniques used to solve problems in fluid mechanics on computers and describes in detail those most often used in practice, including advanced techniques in computational fluid dynamics.
Journal ArticleDOI
A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows
S.V. Patankar,D. B. Spalding +1 more
TL;DR: In this article, a general, numerical, marching procedure is presented for the calculation of the transport processes in three-dimensional flows characterised by the presence of one coordinate in which physical influences are exerted in only one direction.
Journal ArticleDOI
Wing rotation and the aerodynamic basis of insect flight.
TL;DR: In this paper, the authors show that the enhanced aerodynamic performance of insects results from an interaction of three distinct yet interactive mechanisms: delayed stall, rotational circulation, and wake capture.
Wing rotation and the aerodynamic basis of insect flight
TL;DR: A comprehensive theory incorporating both translational and rotational mechanisms may explain the diverse patterns of wing motion displayed by different species of insects.
Journal ArticleDOI
Oscillating foils of high propulsive efficiency
TL;DR: In this article, the phase angle between transverse oscillation and angular motion is the critical parameter affecting the interaction of leading-edge and trailing-edge vorticity, as well as the efficiency of propulsion.