Abstract
*† ‡ The motivation behind the present investigations is the alleviation of vortex wake hazard. The influence of wingtip geometry modifications on the near-field wake behind sweptnotched wings is investigated up to 24 span-lengths, using computational fluid dynamics. 3-D parallel simulations are run at a chord-based Reynolds-number of 5.34×10 4 . The effectiveness of notched wing modifications on wake properties is assessed via comparison with conventional and original notched wings. Current results are promising: the tip and flap vortices produced by the swept-notched wings remain distinct and unmerged, unlike those associated with the conventional wing. In all cases, the wakes of the novel wings have circulations and vorticity values that are substantially lower than the original notched wing. Numerical data clearly indicates that such geometrical combinations break apart the concentrated area of streamwise vorticity shed by the wing into three or more less intense regions, significantly reducing the wake strength, and affecting the location and merging process of the overall wake system.
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