Journal ArticleDOI
Visualization of Transition in the Flow over an Airfoil Using the Smoke-Wire Technique
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TLDR
The smoke-wire technique was used for visualization of the transition of the free shear layer associated with the laminar separation bubble of a NACA 663-018 airfoil section at low Reynolds number as mentioned in this paper.Abstract:
The smoke-wire technique was used for visualization of the transition of the free shear layer associated with the laminar separation bubble of a NACA 663-018 airfoil section at low Reynolds number (Rec = 50,000120,000). The smoke-wire technique allows for the introduction of fine smoke streaklines into the flowfield through the electrical resistive heating of a very fine wire which has been coated with oil and which is located upstream from the leading edge of the airfoil section. Streakline data were collected using both high speed still and motion picture photography.read more
Citations
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Journal ArticleDOI
Experimental Studies of Separation on a Two-Dimensional Airfoil at Low Reynolds Numbers
TL;DR: In this paper, the laminar separation, transition, and turbulent reattachment near the leading edge of a two-dimensional NACA 663 -018 airfoil were investigated using a low-speed, smoke visualization wind tunnel.
Journal ArticleDOI
Vortex shedding and shear-layer instability of wing at low-Reynolds numbers
Rong Fung Huang,Chih L. Lin +1 more
TL;DR: In this article, smoke-wire and surface oil-flow techniques are employed to visualize the flow patterns and evolution of vortex shedding and shear-layer instability of a NACA 0012 cantilever wing.
Journal ArticleDOI
Velocity visualization in gas flows using laser-induced phosphorescence of biacetyl
TL;DR: In this article, a pulsed dye laser is used to excite seeded biacetyl molecules along a line in a nitrogen flow at room temperature, and two successive exposures of the emitted phosphorescence are recorded with an intensified 100×100 element photodiode array camera.
Journal ArticleDOI
The ultra-low Reynolds number airfoil wake
TL;DR: In this article, the authors measured the lift force and the near wake of an NACA 0012 airfoil over the angle (α) of attack of 0°-90° and the chord Reynolds number (Re petertodd c� ), 5.3×−103 −5.1×−104.
Journal ArticleDOI
Transition in a Separation Bubble
E. Malkiel,R. E. Mayle +1 more
TL;DR: In this paper, an experimental investigation of the process of turbulence development in a separation bubble shows that transition occurs within the separated shear layer, and the progression of intermittency along the centerline of the separation bubble is similar to that in attached boundary layer transition.
References
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Book
Flow-Induced Vibration
R. D. Blevins,H. Saunders +1 more
TL;DR: In this paper, the authors focus on applications for offshore platforms and piping; wind-induced vibration of buildings, bridges, and towers; and acoustic and mechanical vibration of heat exchangers, power lines, and process ducting.
Book
Momentum transfer in boundary layers
Tuncer Cebeci,Peter Bradshaw +1 more
TL;DR: In this paper, Cebeci and Bradshaw discuss thin shear layers of all kinds and for the most part do not discuss them explicitly in terms of momentum transport: the title is presumably chosen to show that heat and mass transfer effects are not considered.
Proceedings ArticleDOI
Experimental studies of the laminar separation bubble on a two-dimensional airfoil at low Reynolds numbers
T. J. Mueller,S. M. Batill +1 more
TL;DR: In this paper, the laminar separation, transition and turbulent reattachment near the leading edge of a two-dimensional NACA 663-018 airfoil were investigated using a low speed, smoke visualization wind tunnel.
Related Papers (5)
Experimental Studies of Separation on a Two-Dimensional Airfoil at Low Reynolds Numbers
Vortex shedding and shear-layer instability of wing at low-Reynolds numbers
Rong Fung Huang,Chih L. Lin +1 more