An experimental investigation of a turbulent flowfield in and around a wing/fuselage-type juncture has been made. The results include some measurements taken inside the separated flow region upstream of the wing leading edge. The presence of a wing affects the mean flow distribution upstream of the juncture. The oncoming fuselage boundary layer separates ahead of the wing leading edge, resulting in a vortex that rolls up and trails downstream. In the juncture, the secondary flow system transports turbulence and modifies the mean flow, thus having a large effect on the distribution to turbulent stresses; the separation vortex plays a dominant role in this process. As the downstream distance from the leading edge increases, the vortex diffuses and its core moves away from the juncture. The vortex strenght and the streamwise location of the core of the vortex are affected by the slenderness ratioof the wing leading edge. In the juncture flow, there is considerable evidence of similarity between the turbulent shear stresses and the mean flow strain rates. There is also evidence of similarly in the variations of the turbulent stress components.
Turbulent flow around a wing/fuselage-type juncture
Turbulente Stroemung um eine Fluegel-Rumpf-Verbindung
AIAA Journal ; 24 , 9 ; 1447-1452
1986
6 Seiten, 13 Bilder, 19 Quellen
Article (Journal)
English
Turbulent flow around a wing-fuselage type juncture
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