Tip Vortices
Experimental investigation of wing tip vortices in the near-field
... wing tip vortex, as shown in Figure ...1(b). Tip vortices were measured at different distances x from the trailing edge of the wing to the laser sheet (10 ≤ x ≤ 790 ...
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First identification and quantification of detached-tip vortices behind a wind energy converter using fixed-wing unmanned aircraft system
... detached vortices of a WEC converter are treated similarly to aircraft wake vortices, a few similar model approaches were ...for tip vortices created by aircraft has been done by Ahmad et ...
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Low-Order Modeling of Wing-Tip Vortices Using an Augmented Vortex Lattice Method.
... the tip vortex and separated shear layer are represented by a sheet of vortex rings, albeit free instead of ...free tip vortices, such that the geometry is fully defined and equation ...the ...
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Effect of tip vortices on membrane vibration of flexible wings with different aspect ratios
... leading-edge vortices and wake-capturing ...leading-edge vortices changed with Reynolds number remarkably by investigating the flow structures at three Reynolds numbers, namely, 6000, 120 and ...the ...
7
A Numerical Prediction of Tip Vortices from Tandem Propellers in the Counter Rotating Type Tidal Stream Power Unit
... the tip vortex stretching at downstream of the single and the counter-rotating propeller using a RANS ...the tip vortices are dis- connected at interface surface according to the changing the ...
9
The vortex wake of blackcaps (Sylvia atricapilla L ) measured using high speed digital particle image velocimetry (DPIV)
... wing tip, which partly is due to the ‘upwash’ outside the wing tip vortex, which is tilted forwards because of the flapping of the ...wing tip vortex and the associated decreased velocities move ...
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Flow Visualization Experiments on Tethered Flying Green Lacewings Chrysopa Dasyptera
... above each wing; t.v., tip vortices; C start of coalescence of the vortex tubes; d.v., dorsal vortex; D formation of the upper U-shaped bubble u.u.b.; E growth of the u.u.b.; F generatio[r] ...
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Wake Development behind Paired Wings with Tip and Root Trailing Vortices: Consequences for Animal Flight Force Estimates
... root vortices gives reason to believe that this may be an inevitable feature–at least to some degree–in flying ...root vortices found in the wakes of animals are usually weaker than tip ...
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A Parametric Study of the Effect of the Leading- Edge Tubercles Geometry on the Performance of Aeronautic Propeller using Computational Fluid Dynamics (CFD)
... Abstract— Several researchers have highlighted the fact that the leading-edge tubercles on the humpback whale flippers enhances its maneuverability. Encouraging results obtained due to implementation of the leading-edge ...
10
Aerodynamics of bird flight
... the vortices at the wing tips (induced vortices), especially in lower aspect-ratio-wings, as, ...Traditionally, tip vortices are considered as a nuisance increasing the drag, however, in ...
8
Vortex formation and drag on low aspect ratio, normal flat plates
... the tip was not that hypothesized by Ellington et ...the tip, which slows the accumulation of circulation within the LEV and thus keeps it attached ...(from tip to root) was the opposite of that ...
204
Vortex merger in surface quasi geostrophy
... track vortices at the ocean surface (Chelton et ...to vortices at thermocline depth in the ocean, and a comparison with primitive equation simulations of vortex merger would be of ...
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Direct numerical simulation of the flow around an aerofoil in ramp-up motion
... In the ramp-up case, the lift force initially increases monotonically in time even after having attained the maximum incidence angle. Subsequently, it drops dramatically eventually converging to the static stall figure. ...
18
Anisotropy and vortices in Bose Einstein condensates
... in a superfluid. These aspects are described in [2], and will not be addressed here. In another experiment, achieved in the group of Jean Dalibard in Paris [17], a trapped system, which has a cigar shape, is rotated with ...
14
Motion of two point vortices in a steady, linear, and elliptical flow
... where α and β are constants such that α ≥ β > 0. The flow (1.1) carries fluid particles counterclockwise around the origin, in elliptical trajectories. Kimura and Hasimoto [3] have analyzed a similar problem in which ...
10
The matrix model of vortex-beam quadrefringence in a uniaxial crystal
... the vortices in the dipole (curve 3) forms new transverse branch of the trajectory (see ...charged vortices annihilate, whereas the residual vortex keeps on shaping the major ...the vortices on the ...
15
Downstream and soaring interfaces and vortices in 2-D stratified wakes and their impact on transport of contaminants
... flow with a self-induced fine structure of an initially smooth stratification. To better understand the flow past obstacles and to compare observations with analytical and numerical solutions, the typical approach has ...
8
Spherical vortices in rotating fluids
... spherical vortices identified by Moffatt (1969) that may be matched onto an oncoming irrotational ...spherical vortices may be matched onto an oncoming stream in a rotating ...
11
Structure and Migration of 2D Vortices
... the vortices was followed numerically for ∼ 200 rotations (up to 1000 rotations in some cases) and for a wide range of the possible ...of vortices can be distinguished as shown in figure ...incompressible ...
5
Dynamics of near shore vortices
... straight-line vortices, or, equivalents, point vortices. If point vortices are taken, the model is valid as it stands only if applied to unbounded fluids or if the vortices are in between two ...
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