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Showing 1 to 7 of 7 for “"wing tip vortices"”.
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Understanding the Structure of Wing Tip Vortices of Bio-Inspired Winglets
<p>Bio-inspired wing tip devices were investigated with the goal of improving the fuel efficiency of subsonic aircraft. Particularly, the structure of a bio-inspired winglet design based on bird feathers were tested in a low-speed wind tunnel. Particle image velocimetry (PIV), was used to study the …
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Preliminary Test Predictions for Scale Ram-Air Parachute Testing
… of 26% in the lift curve slope and strong wing tip vortices compared to the baseline model because of wall interaction effects. Finally, experimental tests using correction factors to compensate lift and drag measurements are recommended to directly validate the numerical results.</p>
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Effects of Turbulence Modeling on RANS Simulations of Tip Vortices
… vortical flows. The simulation of aerodynamic wing-tip vortices is used as a test bed. The primary configuration is flow over an isolated finite wing with aspect ratio, , and Reynolds number, . Tip-vortex velocity profiles, vortex core and wake turbulence levels, and Reynolds stresses are …
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An Experimental Investigation of Spanwise Vortices Interacting with Solid and Free Surfaces
Coherent vortices are generated in flow fields due to flow interaction with sharp solid surfaces. Such vortices generate significant disturbances in the flow and affect its further development. In this dissertation attention is focused on the interaction of vortices with solid or free liquid/air …
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The Near Wake of a European Starling
… can be associated with the bird’s location and wing configuration. A kinematic analysis has been performed on select sequences of measurements to characterize the motion of the bird, as well as provide a point of comparison between the bird of the present study and other birds or flapping wings. …
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Numerical Investigation of the Wake of a Rectangular Wing
… sheets that roll up into strong streamwise vortices. The long time behavior of such vortices depends on the turbulence in the wake and the stability characteristics of the vortices themselves. In the near wake of a rectangular wing the flow field consists of a spiraling wake that winds …
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Hydrodynamic Stability of Periodically Unsteady Axisymmetric and Swirling Jets
… jets and wakes, shedding of leading edge and wing tip vortices, tornadoes, astrophysical plasma flows and flows in mechanical devices such as supersonic combustion chambers and cyclone separators. These and other applications have resulted in a high level of interest in the stability of …