한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제17권2호
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  • Pages.39-47
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  • 2019
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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충돌 합성 제트의 와류 이송 특성 분석

Characterization of Vortex Advection from a Synthetic Jet Impinging on a Wall

  • Kim, MuSeong (Department of Mechanical & Aerospace Engineering, Seoul National University) ;
  • Lee, HoonSang (Department of Mechanical & Aerospace Engineering, Seoul National University) ;
  • Hwang, Wontae (Department of Mechanical & Aerospace Engineering, Seoul National University Institute of Advanced Machines and Design, Seoul National University)
  • 투고 : 2019.07.22
  • 심사 : 2019.08.15
  • 발행 : 2019.08.31
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초록

Impingement cooling utilizing synthetic jets is emerging as a popular cooling technique because of its high local cooling efficiency. The interaction between the vortex structure of the synthetic jet and the surface is crucial in understanding the mechanism of this technique. In this study, the impinging vortex structure and its advection are investigated by experiments with jet-to-surface spacing $2{\leq}H/D{\leq}7$, and synthetic jet Reynolds number $5120{\leq}Re{\leq}9050$. Using phase-locked particle image velocimetry, ensemble averaged (phase averaged) flow fields are obtained, and vortex identification and quantification techniques are applied. The shape, trajectory, and intensity change of the vortex are assessed. A sharp decline in the vortex intensity and the occurrence of a counter-rotating vortex at the impingement point are observed.

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참고문헌

  1. Han, B. and Goldstein, R., 2001, "Jet-impingement heat transfer in gas turbine systems", Ann. N.Y. Acad. Sci., Vol. 934, pp. 147-161.
  2. Han, J.C., Dutta, S. and Ekkad, S., 2012, Gas turbine heat transfer and cooling technology, CRC press.
  3. Hollworth, B. and Durbin, M., 1992, "Impingement cooling of electronics", J. Heat Transfer, Vol. 114, pp. 607-613. https://doi.org/10.1115/1.2911324
  4. San, J.Y., Huang, C.H. and Shu, M.H., 1997, "Impingement cooling of a confined circular air jet", Int. J. Heat Mass Transfer, Vol. 40, pp. 1355-1364. https://doi.org/10.1016/S0017-9310(96)00201-3
  5. Jambunathan, K., Lai, E., Moss, M. and Button, B., 1992, "A review of heat transfer data for single circular jet impingement", Int. J. Heat Fluid Flow, Vol. 13, pp. 106-115. https://doi.org/10.1016/0142-727X(92)90017-4
  6. Glezer, A. and Amitay, M., 2002, "Synthetic jets", Annu. Rev. Fluid Mech., Vol. 34, pp. 503-529. https://doi.org/10.1146/annurev.fluid.34.090501.094913
  7. Lasance, C.J. and Aarts, R.M., 2008, Synthetic jet cooling part I: overview of heat transfer and acoustics, in: 2008 Twenty-fourth Annual IEEE Semiconductor Thermal Measurement and Management Symposium, IEEE, pp. 20-25.
  8. Chaudhari, M., Puranik, B. and Agrawal, A., 2010, "Heat transfer characteristics of synthetic jet impingement cooling", Int. J. Heat Mass Transfer, Vol. 53, pp. 1057-1069. https://doi.org/10.1016/j.ijheatmasstransfer.2009.11.005
  9. Pavlova, A. and Amitay, M., 2006, "Electronic cooling using synthetic jet impingement", J. Heat Transfer, Vol. 128, pp. 897-907. https://doi.org/10.1115/1.2241889
  10. Silva-Llanca, L. and Ortega, A., 2017, "Vortex dynamics and mechanisms of heat transfer enhancement in synthetic jet impingement", Int. J. Therm. Sci, Vol. 112, pp. 153-164. https://doi.org/10.1016/j.ijthermalsci.2016.09.021
  11. Valiorgue, P., Persoons, T., McGuinn, A. and Murray, D., 2009, "Heat transfer mechanisms in an impinging synthetic jet for a small jet-to-surface spacing", Exp. Therm. Fluid Sci., Vol. 33, pp. 597-603. https://doi.org/10.1016/j.expthermflusci.2008.12.006
  12. Thielicke, W. and Stamhuis, E., 2014, "PIVlab-towards user-friendly, affordable and accurate digital particle image velocimetry in MATLAB", J. Open. Res. Softw., Vol. e30.
  13. Scarano, F., 2001, "Iterative image deformation methods in PIV", Meas. Sci. Technol., Vol. 13 pp. R1. https://doi.org/10.1088/0957-0233/13/1/201
  14. Westerweel, J. and Scarano, F., 2005, "Universal outlier detection for PIV data", Exp. Fluids, Vol. 39, pp. 1096-1100. https://doi.org/10.1007/s00348-005-0016-6
  15. Smith, B. and Swift, G., 2003, "A comparison between synthetic jets and continuous jets", Exp. Fluids, Vol. 34, pp. 467-472. https://doi.org/10.1007/s00348-002-0577-6
  16. Westerweel, J., 1995, Digital particle image velocimetry: Theory and application, in, Delft University, the Netherlands.
  17. Landreth, C.C. and Adrian, R.J., 1990, "Impingement of a low Reynolds number turbulent circular jet onto a flat plate at normal incidence", Exp. Fluids, Vol. 9, pp. 74-84. https://doi.org/10.1007/BF00575338
  18. Hunt, J.C., Wray, A.A. and Moin, P., 1988, Eddies, streams, and convergence zones in turbulent flows, in: Proc. 1988 Summer Program of the Center for Turbulence Research, pp. 193-208.
  19. Chen, Q., Zhong, Q., Qi, M. and Wang, X., 2015, "Comparison of vortex identification criteria for planar velocity fields in wall turbulence", Phys. Fluids, Vol. 27 pp. 085101. https://doi.org/10.1063/1.4927647
  20. Butler, K.M., 1993, Estimation of wake vortex advection and decay using meteorological sensors and aircraft data, in, Massachusetts Inst. of Tech. Lexington Lincoln Lab.
  21. Xu, Y., He, G., Kulkarni, V. and Wang, J., 2017, "Experimental investigation of influence of Reynolds number on synthetic jet vortex rings impinging onto a solid wall", Exp. Fluids, Vol. 58 (1) pp. 6. https://doi.org/10.1007/s00348-016-2287-5