Control of Flow Structure on Delta Wing with Steady Trailing-Edge Blow

AIAA Journal ◽  
2006 ◽  
Vol 44 (3) ◽  
pp. 493-501 ◽  
Author(s):  
M. M. Yavuz ◽  
D. Rockwell
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Trailing Edge ◽  
Control Of Flow

Effects of Trailing-Edge Attachment on the Flow Structure over a Generic Delta Wing

2017 ◽  
Vol 30 (5) ◽  
pp. 06017003
Author(s):  
C. Canpolat ◽  
S. Yayla ◽  
B. Sahin ◽  
H. Akilli
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Trailing Edge

Control of Flow Structure over a Nonslender Delta Wing Using Periodic Blowing

AIAA Journal ◽  
2018 ◽  
Vol 56 (1) ◽  
pp. 90-99 ◽  
Author(s):  
Cenk Çetin ◽  
Alper Çelik ◽  
Mehmet Metin Yavuz
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Control Of Flow

Control of flow structure over a non-slender delta wing using passive bleeding

2020 ◽  
Vol 106 ◽  
pp. 106136
Author(s):  
Kayacan Kestel ◽  
Burcu Ramazanlı ◽  
Mehmet Metin Yavuz
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Control Of Flow

Effects of a vectored trailing edge jet on delta wing vortex breakdown

2003 ◽  
Vol 34 (5) ◽  
pp. 651-654 ◽  
Author(s):  
J. J. Wang ◽  
Q. S. Li ◽  
J. Y. Liu
Keyword(s):  
Vortex Breakdown ◽  
Delta Wing ◽  
Trailing Edge

Critical states and flow structure on a 65-deg delta wing

1996 ◽  
Vol 33 (2) ◽  
pp. 347-352 ◽  
Author(s):  
Charles E. Jobe ◽  
Alexander H. Hsia ◽  
Jerry E. Jenkins ◽  
Gregory A. Addington
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Critical States

Flow Structure and Turbulence in the Tip Region of a Turbomachine Rotor Blade

2007 ◽  
Author(s):  
Francesco Soranna ◽  
Yi-Chih Chow ◽  
Oguz Uzol ◽  
Joseph Katz
Keyword(s):  
Kinetic Energy ◽  
Turbulent Kinetic Energy ◽  
Flow Structure ◽  
Turbulent Diffusion ◽  
Rotor Blade ◽  
Trailing Edge ◽  
Left Hand ◽  
Tip Leakage ◽  
The Subject ◽  
Turbulence Production

The flow structure and turbulence in the tip region of a rotor blade operating downstream of a row of Inlet Guide Vanes (IGVs) are investigated experimentally in a refractive index matched facility that provides unobstructed view of the entire flow field. Stereo-PIV measurements are performed in closely spaced radial planes near the blade tip in a region extending from (slightly upstream of) the blade trailing edge to about 40% of the chord downstream of it. The data enable calculations of all the components of the phase-averaged velocity and vorticity vectors, as well as the strain rate, Reynolds stress, and turbulent diffusion tensors. Each rotor blade is confined between two tip-leakage vortices, a right hand vortex (RHV), generated by the subject blade and propagating along its right hand side, and a left hand vortex (LHV), generated by the previous blade in the same row and propagating along the left hand side of the subject blade. In addition, a trailing edge vortex (TEV) lays underneath the LHV and is subject to intense shearing/deformation by the LHV. RHV-induced radial gradients of radial phase-averaged velocity cause negative turbulence production, P, along the RHV-axis, and formation of a region of low P in the gap between the RHV and the blade suction surface. Trends of turbulent kinetic energy k and P within the RHV do not agree due to the effects of advection by the phase-averaged flow. To the left of the blade, shearing of the TEV by the LHV enhances turbulence production in the region between the two vortices and the rotor wake. Trends of turbulent kinetic energy and its production rate are in good agreement and peaks of k and P occur at the same location. As the TEV migrates away from the LHV, shearing effects become weaker and the dominant contributors to production are terms containing vortex-induced radial gradients of axial and radial velocities. Turbulent diffusion is a minor contributor to the evolution of turbulent kinetic energy in the tip region. It is also shown that the tip-leakage flow/vortex deteriorates the rotor blade performance, causing a ∼66% increase in shaft power input (per unit mass flow-rate) in the tip region in comparison with midspan.

Dye Visualization of the Flow Structure over a Yawed Nonslender Delta Wing

2009 ◽  
Vol 46 (5) ◽  
pp. 1818-1822 ◽  
Author(s):  
C. Canpolat ◽  
S. Yayla ◽  
B. Sahin ◽  
H. Akilli
Keyword(s):  
Flow Structure ◽  
Delta Wing ◽  
Dye Visualization
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