[PDF] Top 20 Flow over a Wing with Leading-Edge Undulations

... (or undulations) that can be seen along the leading edge of the ...passive flow-control device, delaying the stall ...of leading-edge undulations as passive flow ... See full document

... of flow reattachment, velocity signals were acquired in the near wake (5mm downstream of the wing’s trailing edge) at two span locations where flow reattachment was ... See full document

... and flow physics ...Trapezoidal wing is an open-domain high lift problem posed by NASA-Langley center for inter- ested researchers to validate their CFD codes against avail- able experimental data for ... See full document

... the flow is characterized by completely attached flow with a weak tip vortex and a weak leading edge bubble, figure ...entire leading edge is an indication of the leading ... See full document

... flows over a stationary 60-degree swept delta wing with a sharp leading edge were computationally simulated at different Mach numbers and moderate angles of the ...Vortical flow ... See full document

... the leading edge modelling, the profile drag prediction was not significantly affected as the predicted momentum thickness in the far wake was almost similar from both the old and the new version of ...mean ... See full document

... the leading- edge flow structures on the flapping wings are analogous to those on the fixed delta wings, for example, the conical primary vortex, the intense spanwise flow, the LEV breakdown ... See full document

... the wing. As expected, the cruise wing results indicated the typical localized peak pressure coefficient to be near the leading edge, with gradual pressure recovery farther along the upper ... See full document

... the leading edge of a delta ...of flow structure of the vortex ...unstable. Over 120 degrees, the characteristics of the vortex are considered to have converted from the longitudinal vortex to ... See full document

... the case without jet. In the case without variation of the angle of attack (Ω = 0°), the single subsonic counter-flow jet achieves high cooling effectiveness; the time average of η is 0.94. As expected and ... See full document

... the wing surface owing to the method we used for fi ltering out re fl ections from the wing surface ( section ...the wing surface were used to visualize near-surface fl ows within the boundary ... See full document

... geometrical undulations of the leading edge of an infinite wing is investigated numerically at low Reynolds number, in the context of passive separation control and focussing on the physical ... See full document

... the flow field at the outer wing could not be visualized via this dye method, DPIV measurements were conducted along the spanwise direction from the wing-base to the tip with a 15·mm ...outer ... See full document

... A wing starting from rest shows an initial force transient followed by constant force production ...the wing surface slightly faster at higher Re ... See full document

... time-dependent flow problems ...unsteady leading edge vortex formation induced by large amplitude heaving oscillations of a low- aspect-ratio wing under low Reynolds number conditions and its ... See full document

... The pressure distributions are obtained over the large model for a Reynolds number of 3.9 e7 at angles of attack of 15°and 25°. The vortex burst is calculated for the value of U/U∞ = 0 (Fig.7).The vortices are ... See full document

... Once a suitable mesh has been generated, a computational algorithm numerically solves the equations for fluid properties values at each volumetric cell center, from which these values can be interpolated to cell faces. ... See full document

... a wing can prevent dangerous and uncontrollable stalls by aiding the pilots in early diagnosis of the ...situation. Flow sensing is also extremely useful in multiple other fields such as wind tunnel tests ... See full document

... incorporating flow control modelling as a replacement for simple data-sheet methods for use in future project studies, for which traditional design rules are not ...infinite-swept wing flows using Lock’s ... See full document

... the flow controlling butterfly valve, diffuser and the plenum chamber to stabilize the ...open flow field created between the discharge duct and bell mouth entry become the experimental space where desire ... See full document