This study reports an efficient reduction of the drag exerted by a flow on a cylinder when the former is forced with a plasma actuator. A three-electrode plasma device (TED) disposed on the surface of the body is considered, and the effect of the actuation frequency and amplitude is studied. Particle image velocimetry (PIV) measurements provided a detailed information that was processed to obtain the time-averaged drag force and to compare the performances of TED actuator and the canonical dielectric discharge barrier actuator. For the Reynolds number considered (Re = 5500), excitations with the TED actuator were more efficient, achieving drag reductions that attained values close to 40% with high net energy savings. The reduction of coherent structures using the instantaneous vorticity fields and a clustering technique allowed us to gain insight into the physical mechanisms involved in these phenomena. This highlights that the symmetrical forcing of the wake flow at its resonant frequency with the TED promotes symmetrical vorticity patterns which favor drag reductions.
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June 2017
Research-Article
Circular Cylinder Drag Reduction By Three-Electrode Plasma Symmetric Forcing
Juan D'Adamo,
Juan D'Adamo
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
e-mail: jdadamo@fi.uba.ar
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
e-mail: jdadamo@fi.uba.ar
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Leandro Leonardo,
Leandro Leonardo
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
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Federico Castro,
Federico Castro
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
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Roberto Sosa,
Roberto Sosa
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
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Thomas Duriez,
Thomas Duriez
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina;
Laboratorio de Microfluídica,
Universidad de la afarina Mercante,
Marina Mercante C1034ACO, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina;
Laboratorio de Microfluídica,
Universidad de la afarina Mercante,
Marina Mercante C1034ACO, Argentina
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Guillermo Artana
Guillermo Artana
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Search for other works by this author on:
Juan D'Adamo
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
e-mail: jdadamo@fi.uba.ar
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
e-mail: jdadamo@fi.uba.ar
Leandro Leonardo
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Federico Castro
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Roberto Sosa
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Thomas Duriez
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina;
Laboratorio de Microfluídica,
Universidad de la afarina Mercante,
Marina Mercante C1034ACO, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina;
Laboratorio de Microfluídica,
Universidad de la afarina Mercante,
Marina Mercante C1034ACO, Argentina
Guillermo Artana
CONICET,
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
Facultad de Ingenieria,
Universidad de Buenos Aires,
Buenos Aires C1063ACV, Argentina
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received August 14, 2016; final manuscript received January 23, 2017; published online April 20, 2017. Assoc. Editor: Shizhi Qian.
J. Fluids Eng. Jun 2017, 139(6): 061202 (14 pages)
Published Online: April 20, 2017
Article history
Received:
August 14, 2016
Revised:
January 23, 2017
Citation
D'Adamo, J., Leonardo, L., Castro, F., Sosa, R., Duriez, T., and Artana, G. (April 20, 2017). "Circular Cylinder Drag Reduction By Three-Electrode Plasma Symmetric Forcing." ASME. J. Fluids Eng. June 2017; 139(6): 061202. https://doi.org/10.1115/1.4035947
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