Experimental study of secondary vortex structures in a rotor wake

2019 ◽  
Vol 60 (11) ◽  
Author(s):  
C. Christian Wolf ◽  
Clemens Schwarz ◽  
Kurt Kaufmann ◽  
Anthony D. Gardner ◽  
Dirk Michaelis ◽  
...  
Keyword(s):  
Experimental Study ◽  
Vortex Structures ◽  
Secondary Vortex ◽  
Rotor Wake

An Experimental Study of Streamwise Vortices in a Compressor Cascade

1988 ◽  
Author(s):  
Chen Fang ◽  
Chen Mao-Zhang ◽  
Jiang Hao-Kang
Keyword(s):  
Experimental Study ◽  
Vortex Pair ◽  
Secondary Vortex ◽  
Streamwise Vortices ◽  
Reynolds Stresses ◽  
Compressor Cascade ◽  
Suction Surface ◽  
Mean Velocity ◽  
Passage Vortex ◽  
Corner Vortex

An experimental study on the production and development of streamwise vortices in a compressor cascade is reported. At four locations inside and one location outside the blade passage, the mean velocity components, three turbulent intensities and three Reynolds stresses were measured with a “x” hot wire probe. The results obtained describe the flow structure in the corner between the end-wall and blade suction surface in detail. Besides a passage vortex within the passage, there exist a shed corner vortex pair and a secondary vortex pair in the corner. The characteristics of two vortex pairs were different from that of the passage vortex. The mechanism causing the shed corner vortex pair and secondary vortex pair and the effect of these vortices on the cascade losses are discussed.

3D Structure of the Rotor Wake of a Three Different Sweep Axial Fan

2005 ◽  
Author(s):  
Ge´rald Kergourlay ◽  
Smai¨ne Kouidri ◽  
Gary W. Rankin ◽  
Robert Rey
Keyword(s):  
Experimental Study ◽  
Spectral Analysis ◽  
Data Analysis ◽  
Kinetic Energy ◽  
Stress Tensor ◽  
3D Structure ◽  
Velocity Measurements ◽  
Axial Fan ◽  
Rotor Wake ◽  
Hot Film

This experimental study, applied to a three different sweep axial fan (backward, radial and forward), aims at determining the 3D structure of the rotor wake from unsteady velocity measurements. The hot-film anemometry is used to measure the 3D unsteady velocity components in nearfield, downstream the fan. The data analysis leading to averaged and turbulent velocities, the components of the Reynolds’ stress tensor and the turbulent kinetic energy is presented, in order to illustrate the influence of the sweep. A spectral analysis is also performed.

An experimental study of the unsteady vortex structures in the wake of a root-fixed flapping wing

2011 ◽  
Vol 51 (2) ◽  
pp. 347-359 ◽  
Author(s):  
Hui Hu ◽  
Lucas Clemons ◽  
Hirofumi Igarashi
Keyword(s):  
Experimental Study ◽  
Vortex Structures ◽  
Flapping Wing

Experimental Study of Rotor Wake/Body Interactions in Hover

1992 ◽  
Vol 37 (4) ◽  
pp. 48-57 ◽  
Author(s):  
A. Bagai ◽  
J. G. Leishman
Keyword(s):  
Experimental Study ◽  
Rotor Wake

An experimental study of tip-vortex structures behind a small wind turbine with a flanged diffuser

2006 ◽  
Vol 9 (5) ◽  
pp. 413-417 ◽  
Author(s):  
K. Abe ◽  
H. Kihara ◽  
A. Sakurai ◽  
E. Wada ◽  
K. Sato ◽  
...  
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Vortex Structures ◽  
Tip Vortex ◽  
Small Wind Turbine
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