This study analyzes the flow around a circular cylinder when a dielectric barrier discharge (DBD) plasma actuator is mounted on the cylinder surface. The experiments are mainly performed at Re = 26500. Flow visualization, surface pressures, and wake velocity measurements are performed for the on and off modes of the plasma (pulse modulated drive). The results indicate that the wake expansion and the length of the cavity region significantly change depending on the actuator location, duty ratio and modulation frequency. When the actuator is located close to the separation point and is driven at the Karman vortex shedding frequency (St = 0.19) with the symmetric actuation mode or at St = 0.38 with the asymmetric actuation mode, the vortex shedding is amplified and the surface pressure behind the cylinder decreases; consequently, the pressure drag increases. On the other hand, at a higher modulation frequency (St ≧1), the vortex shedding process is weakened and the wake turbulence is suppressed; consequently, the drag is reduced to 80% of the non-excited case.
Skip Nav Destination
ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Effect of DBD Plasma Jet on the Flow Around a Circular Cylinder
Yasuaki Kozato,
Yasuaki Kozato
Gifu University, Gifu, Gifu, Japan
Search for other works by this author on:
Satoshi Kikuchi,
Satoshi Kikuchi
Gifu University, Gifu, Gifu, Japan
Search for other works by this author on:
Shigeki Imao
Shigeki Imao
Gifu University, Gifu, Gifu, Japan
Search for other works by this author on:
Yasuaki Kozato
Gifu University, Gifu, Gifu, Japan
Satoshi Kikuchi
Gifu University, Gifu, Gifu, Japan
Shigeki Imao
Gifu University, Gifu, Gifu, Japan
Paper No:
AJK2011-13016, pp. 3101-3107; 7 pages
Published Online:
May 25, 2012
Citation
Kozato, Y, Kikuchi, S, & Imao, S. "Effect of DBD Plasma Jet on the Flow Around a Circular Cylinder." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 3101-3107. ASME. https://doi.org/10.1115/AJK2011-13016
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
The Effect of Uniform Blowing on the Flow Past a Circular Cylinder
J. Fluids Eng (June,2002)
Numerical Investigation on Heat Transfer and Flow Characteristics of a Confined Circular Cylinder With Slit
J. Thermal Sci. Eng. Appl (October,2020)
On the Relationships Among Strouhal Number, Pressure Drag, and Separation Pressure for Blocked Bluff-Body Flow
J. Fluids Eng (February,2010)
Related Chapters
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
CFD Analysis of Propeller Tip Vortex Cavitation in Ship Wake Fields
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Numerical Study of Cavitating Structure Near Wake of a Circular Cylinder
Proceedings of the 10th International Symposium on Cavitation (CAV2018)