Detailed measurements of a flap side-edge flow field

1998 ◽  
Author(s):  
Ronald Radeztsky, Jr. ◽  
Bart Singer ◽  
Mehdi Khorrami
Keyword(s):  
Flow Field ◽  
Side Edge ◽  
Edge Flow

Numerical and experimental investigation of a beveled trailing-edge flow field and noise emission

2016 ◽  
Vol 384 ◽  
pp. 113-129 ◽  
Author(s):  
W.C.P. van der Velden ◽  
S. Pröbsting ◽  
A.H. van Zuijlen ◽  
A.T. de Jong ◽  
Y. Guan ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Flow Field ◽  
Noise Emission ◽  
Trailing Edge ◽  
Beveled Trailing Edge ◽  
Edge Flow

Compressor Wake/Leading-Edge Interactions at Off Design Incidences

2008 ◽  
Author(s):  
Andrew P. S. Wheeler ◽  
Robert J. Miller
Keyword(s):  
Boundary Layer ◽  
Shear Stress ◽  
Flow Field ◽  
Leading Edge ◽  
Flow Coefficient ◽  
Surface Shear Stress ◽  
Momentum Thickness ◽  
Surface Shear ◽  
Time Resolved ◽  
Edge Flow

In this paper, the effects of wake/leading-edge interactions were studied at off-design conditions. Measurements were performed on the stator-blade suction surface at midspan. The leading-edge flow-field was investigated using hotwire micro-traverses, hotfilm surface shear-stress sensors and pressure micro-tappings. The trailing-edge flow-field was investigated using hotwire boundary-layer traverses. Unsteady CFD calculations were also performed to aid the interpretation of the results. At low flow coefficients, the time-averaged momentum thickness of the leading-edge boundary layer was found to rise as the flow coefficient was reduced. The time-resolved momentum-thickness rose due to the interaction of the incoming rotor wake. As the flow coefficient was reduced, the incoming wakes increased in pitch-wise extent, velocity deficit and turbulence intensity. This increased both the time-resolved rise in the momentum thickness and the turbulent spot production within the wake affected boundary-layer. Close to stall, a drop in the leading-edge momentum thickness was observed in-between wake events. This was associated with the formation of a leading-edge separation bubble in-between wake events. The wake interaction with the bubble gave rise to a shedding phenomenon, which produced large length scale disturbances in the surface shear stress.

Radiated sound and turbulent motions in a blunt trailing edge flow field

2006 ◽  
Vol 27 (4) ◽  
pp. 730-736 ◽  
Author(s):  
Daniel W. Shannon ◽  
Scott C. Morris ◽  
Thomas J. Mueller
Keyword(s):  
Flow Field ◽  
Trailing Edge ◽  
Blunt Trailing Edge ◽  
Radiated Sound ◽  
Edge Flow
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