scholarly journals An experimental study on the effects of two-dimensional positive surface defects on the laminar–turbulent transition of a sucked boundary layer

2019 ◽  
Vol 60 (6) ◽  
Author(s):  
Jeanne Methel ◽  
Maxime Forte ◽  
Olivier Vermeersch ◽  
Grégoire Casalis
Keyword(s):  
Boundary Layer ◽  
Experimental Study ◽  
Surface Defects ◽  
Two Dimensional ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

Experimental study of laminar-turbulent transition on a swept wing with local boundary-layer suction at subsonic velocities

1998 ◽  
Vol 33 (4) ◽  
pp. 519-525
Author(s):  
V. F. Babuev ◽  
V. I. Biryukov ◽  
V. D. Bokser ◽  
A. F. Kiselev ◽  
V. G. Mikeladze ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Experimental Study ◽  
Swept Wing ◽  
Local Boundary ◽  
Boundary Layer Suction ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

INFLUENCE OF THE PLATE LEADING-EDGE SHAPE AND THICKNESS ON THE BOUNDARY LAYER LAMINAR-TURBULENT TRANSITION IN HYPERSONIC FLOW

2019 ◽  
Vol 50 (5) ◽  
pp. 461-481
Author(s):  
Sergei Vasilyevich Aleksandrov ◽  
Evgeniya Andreevna Aleksandrova ◽  
Volf Ya. Borovoy ◽  
Andrey Vyacheslavovich Gubernatenko ◽  
Vladimir Evguenyevich Mosharov ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Hypersonic Flow ◽  
Leading Edge ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

An experimental study of the influence of riblets on transition

1996 ◽  
Vol 315 ◽  
pp. 31-49 ◽  
Author(s):  
G. R. Grek ◽  
V. V. Kozlov ◽  
S. V. Titarenko
Keyword(s):  
Experimental Study ◽  
Three Dimensional ◽  
Negative Influence ◽  
Positive Influence ◽  
Linear Stage ◽  
Turbulent Transition ◽  
Transition Structures ◽  
Stage Transition ◽  
Tollmien Schlichting ◽  
Laminar Turbulent Transition

An experimental study of the effect of riblets on three-dimensional nonlinear structures, the so-called Λ-vortices on laminar-turbulent transition showed that riblets delay the transformation of the Λ-vortices into turbulent spots and shift the point of transition downstream. This result is opposite to the negative influence of such ribbed surfaces on two-dimensional linear Tollmien-Schlichting waves (the linear stage of transition). Thus, the ribbed surface influences laminar-turbulent transition structures differently: a negative influence on the linear-stage transition structures and a positive influence on the nonlinear-stage transition structures. It is demonstrated that transition control by means of riblets requires special attention to be paid to the choice of their location, taking into account the stage of transition.

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