TY - GEN
T1 - Numerical study of three-dimensional effects of plasma structure on flow field around DBD plasma actuator
AU - Nishida, Hiroyuki
AU - Nonomura, Taku
AU - Abe, Takashi
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI Grant Number 24760659 and Strategic Programs for Innovative Research (SPIRE) of High Performance Computing Initiative (HPCI), hp120296, hp130001. Computation time was provided by the Japan Aerospace Exploration Agency (JAXA) Supercomputer System.
Publisher Copyright:
© 2015 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
PY - 2015
Y1 - 2015
N2 - Discharge plasma evolution of DBD plasma actuator was numerically simulated in the three dimensional space to analyze the spanwise non-uniformity in the body force field and discuss the validity of the 2D analysis. A sinusoidal applied voltage was simulated and the simulation could successfully reproduce the characteristics of micro-discharge as reported by previous experimental studies. The body force field obtained in the simulation was spanwise non-uniform and strong spanwise force was also generated even from the time-average view point. The spanwise-averaged body force field was compared with the 2D simulation result. The comparison indicated that the 2D simulation slightly underestimated the chordwise extension of the force field and the force amplitude due to weaker electric field concentration in the 2D plasma structure. However, the discrepancies are small and the body force field in the 2D simulation qualitatively corresponded well to the 3D simulation resuls from the time-average and spanwise-average view point. Therefore, it can be expected that the 2D simulation is sufficiently useful to study qualitative characteristics and the physics in DBD plasma actuator. On the other hand, the 3D simulation can reproduce the spanwise non-uniformity in the body force field, and the effects of the spanwise non-uniformity on flow control can be investigated by inputing the 3D simulation result to CFD simulations.
AB - Discharge plasma evolution of DBD plasma actuator was numerically simulated in the three dimensional space to analyze the spanwise non-uniformity in the body force field and discuss the validity of the 2D analysis. A sinusoidal applied voltage was simulated and the simulation could successfully reproduce the characteristics of micro-discharge as reported by previous experimental studies. The body force field obtained in the simulation was spanwise non-uniform and strong spanwise force was also generated even from the time-average view point. The spanwise-averaged body force field was compared with the 2D simulation result. The comparison indicated that the 2D simulation slightly underestimated the chordwise extension of the force field and the force amplitude due to weaker electric field concentration in the 2D plasma structure. However, the discrepancies are small and the body force field in the 2D simulation qualitatively corresponded well to the 3D simulation resuls from the time-average and spanwise-average view point. Therefore, it can be expected that the 2D simulation is sufficiently useful to study qualitative characteristics and the physics in DBD plasma actuator. On the other hand, the 3D simulation can reproduce the spanwise non-uniformity in the body force field, and the effects of the spanwise non-uniformity on flow control can be investigated by inputing the 3D simulation result to CFD simulations.
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U2 - 10.2514/6.2015-1733
DO - 10.2514/6.2015-1733
M3 - Conference contribution
AN - SCOPUS:84980371885
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 53rd AIAA Aerospace Sciences Meeting, 2015
Y2 - 5 January 2015 through 9 January 2015
ER -