Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Research on Flow Analysis Program Development Considering Equilibrium Plasma Flow and Impulse Characterization of Sparkjet Actuator

플라즈마에 의한 평형 유동을 고려한 스파크제트 액츄에이터 유동 해석 프로그램 개발과 추력 특성 연구

  • Kim, Hyung-Jin (Dept. of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Shin, Jin Young (Dept. of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Chae, Jeongheon (Dept. of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Ahn, Sangjun (Dept. of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Kyu Hong (Dept. of Mechanical and Aerospace Engineering, Seoul National University)
  • Received : 2018.10.08
  • Accepted : 2018.12.28
  • Published : 2019.02.01
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Abstract

Sparkjet actuator, also known as plasma synthetic jet actuator (PSJA), is an active flow control device that has possibility of controling supersonic flow. This actuator utilizes arc plasma to deposit energy onto the gas inside the cavity to raise temperature and pressure. A change in the state of the fluid inside the cavity generates pressure waves and momentum jet, and they are exhausted through out the orifice exit and disturb external flow field. Since the cavity flow is affected by arc plasma, which is an equilibrium plasma and have generated equilibrium flow, the equilibrium state of air should be considered in order to analyze the flow of sparkjet actuator. In this study, numerical program for equilibrium flow was developed for the use of sparkjet actuator analysis. The developed program was validated by comparing the time - accurate jet front positions with the reference result. Then, impulse characteristics of the actuator in the atmospheric quiescent air were explained.

스파크제트 액츄에이터는 플라즈마 합성 제트 액츄에이터(plasma synthetic jet actuator, PSJA)라고도 불리는 능동 유동 제어 장치로, 초음속 유동의 제어 가능성이 있어 많은 연구가 진행 중이다. 이 액츄에이터는 아크 플라즈마를 이용해 캐비티(cavity) 내부에 에너지를 주입하여 온도와 압력을 상승시킨다. 온도와 압력이 상승한 캐비티에서 오리피스(orifice)를 통해 압력파와 제트가 분출되어 외부 유동에 교란을 준다. 플라즈마의 영향으로 캐비티 유동은 고온, 고압의 평형 유동이 되기 때문에 스파크제트 액츄에이터의 유동 해석을 위해선 공기의 평형 상태를 고려해야 한다. 본 연구에서는 평형 유동의 특성을 고려하여 스파크제트 액츄에이터 유동 해석을 위한 수치해석 프로그램을 개발했다. 개발된 프로그램의 검증으로 문헌에서 얻을 수 있는 실험 결과와 시간에 따른 제트의 위치를 비교했다. 또한 상온, 상압의 무풍에서 액츄에이터의 추력 특성을 분석했다.

Keywords

References

  1. Grossman, K., Cybyk, B., and David, V., "Sparkjet actuators for flow control," 41st Aerospace Sciences Meeting and Exhibit, Jan. 2003, p. 57.
  2. Haack, S., Taylor, T., Emhoff, J., Emhoff, J., and Cybyk, B., "Development of an analytical SparkJet model," 5th Flow Control Conference, 2010, pp. 4979.
  3. Anderson, K. V., and Knight, D. D., "Plasma jet for flight control," AIAA journal, Vol. 50, Sept. 2012, pp. 1855-1872. https://doi.org/10.2514/1.J051309
  4. Dufour, G., Hardy, P., Quint, G., and Rogier, F., "Physics and models for plasma synthetic jets," International Journal of Aerodynamics, Vol. 3, No. 1-2-3, 2013, pp. 47-70. https://doi.org/10.1504/IJAD.2013.050922
  5. Laurendeau, F., Chedevergne, F., and Casalis, G., "Transient ejection phase modeling of a Plasma Synthetic Jet actuator," Physics of Fluids, Vol. 26, No. 12, 2014, 125101. https://doi.org/10.1063/1.4902394
  6. Popkin, S. H., Cybyk, B. Z., Foster, C. H., and Alvi, F. S., "Experimental Estimation of SparkJet Efficiency," AIAA Journal, Vol. 54, No. 6, 2018, pp. 1831-1845.
  7. Belinger, A., Hardy, P., Barricau, P., Cambronne, J. P., and Caruana, D., "Influence of the energy dissipation rate in the discharge of a plasma synthetic jet actuator," Journal of Physics D: Applied Physics, Vol. 44, No. 36, 2011, 365201. https://doi.org/10.1088/0022-3727/44/36/365201
  8. Gordon, S., and McBride, B. J., "Computer program for calculation of complex chemical equilibrium compositions and applications I. Analysis," NASA Reference Publication 1311, 1994.
  9. Bae, J., "Development of Equilibrium Flow CFD Code Using CEA Database and Prediction on Ablation of SiC Coating Nozzle," Master Dissertation, Seoul National University, 2017.
  10. Kim, K. H., and Kim, C., "Accurate, efficient and monotonic numerical methods for multidimensional compressible flows Part I: Spatial discretization," Journal of Computational Physics, Vol. 208, No. 2, 2005, pp. 527-569. https://doi.org/10.1016/j.jcp.2005.02.021
  11. Kim, H. J., Chae, J., Ahn, S., and Kim, K. H., "Numerical Analysis on Jet Formation Process of Sparkjet Actuator," AIAA Aerospace Sciences Meeting, 2018, p. 1552.