Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators
Joint Authors
Fukagata, Koji
Igarashi, Taichi
Naito, Hiroshi
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-22
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Flow around a circular cylinder controlled using plasma actuators is investigated by means of direct numerical simulation (DNS).
The Reynolds number based on the freestream velocity and the cylinder diameter is set at ReD=1000.
The plasma actuators are placed at ±90° from the front stagnation point.
Two types of forcing, that is, two-dimensional forcing and three-dimensional forcing, are examined and the effects of the forcing amplitude and the arrangement of plasma actuators are studied.
The simulation results suggest that the two-dimensional forcing is primarily effective in drag reduction.
When the forcing amplitude is higher, the mean drag and the lift fluctuations are suppressed more significantly.
In contrast, the three-dimensional forcing is found to be quite effective in reduction of the lift fluctuations too.
This is mainly due to a desynchronization of vortex shedding.
Although the drag reduction rate of the three-dimensional forcing is slightly lower than that of the two-dimensional forcing, considering the power required for the forcing, the three-dimensional forcing is about twice more efficient.
American Psychological Association (APA)
Igarashi, Taichi& Naito, Hiroshi& Fukagata, Koji. 2014. Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-483369
Modern Language Association (MLA)
Igarashi, Taichi…[et al.]. Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators. Mathematical Problems in Engineering No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-483369
American Medical Association (AMA)
Igarashi, Taichi& Naito, Hiroshi& Fukagata, Koji. Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-483369
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483369