Effects of Duty Cycles of the Plasma Actuators on Improvement of Pressure Distribution Above a NLF0414 Airfoil

This paper investigates the effects of duty cycle on improvement of pressure distribution above a NLF0414 airfoil using the plasma actuators. Three dielectric barrier discharges as the plasma actuators are flush mounted on airfoil surface in different positions in order to improve pressure at post-s...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2012-05, Vol.40 (5), p.1434-1440
Main Authors: Taleghani, A. Shams, Shadaram, A., Mirzaei, M.
Format: Article
Language:English
Subjects:
Actuators
Automotive components
Dielectric barrier discharge
Dielectrics
duty cycle
Electrodes
Energy consumption
excitation frequency
Experiments
flow control
Frequencies
Instruments
plasma actuator
Plasma physics
Plasmas
Pressure distribution
Root mean square
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Summary:This paper investigates the effects of duty cycle on improvement of pressure distribution above a NLF0414 airfoil using the plasma actuators. Three dielectric barrier discharges as the plasma actuators are flush mounted on airfoil surface in different positions in order to improve pressure at post-stall angle of attacks. The experiments were performed at Re C = 7.5 × 10 5 and the post-stall angles of attacks. The main aim of the related experiments in this paper is to better understand how duty cycles must be applied in order to have the most effective conditions for different excitation frequencies and different angles of attack. Results show that the plasma actuators in unsteady excitations are more effective in lower duty cycles on low excitation frequencies, but the lower duty cycles loss their effectiveness on higher excitation frequencies.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2012.2187683