Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Flow Control and Heat Transfer Enhancement from a Heated Block by an Inflow Pulsation (II) Thermal Field Computation

입구 유동 가진에 의한 사각 발열체 주위의 유동제어 및 열전달촉진 (II) 온도장 수치해석

  • 리광훈 (서울시립대학교 기계정보공학과) ;
  • 김서영 (KIST 열유동제어연구센) ;
  • 성형진 (한국과학기술원 기계공학과)
  • Published : 2002.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

uniform temperature. The surfaces of the block are taken at a constant higher temperature. The channel walls are assumed to be adiabatic. Results on the time-dependent temperature field are obtained and averaged over a cycle of pulsation. The effect of the important governing parameters, such as the Strouhal number on the flow and the heat transfer is investigated in detail. The results indicate that the recirculating flow behind the block are substantially affected by the pulsation frequency. These, in turn, have a strong influence on the thermal transport from the heated element to the pulsating flow. The frequency at which the enhancement is maximum is determined.

Keywords

References

  1. Kim, S. Y, Kang, B. H. and Jaluria, Y., 1998, Thermal Interaction between Isolated Heated Electronic Components in Pulsating Channel Flow, Numerical Heat Transfer Part A, Vol. 34, Iss. 1, pp 1-21
  2. Ghaddar, N. K., Magen, M., Mikic, B. B. and Patera, A. T., 1986, Numerical Investigation of Incompressible Flow in Grooved Channels, Part 1. Stability and Self-sustained Oscillations, Journal of Fluid Mechanics, Vol. 163, pp. 99-127
  3. Greiner, M., 1991, An Experimental Investigation of Resonant Heat Transfer Enhancement in Grooved Channel, Int. J. Heat Mass Transfer, Vol. 34, pp. 1383-1391 https://doi.org/10.1016/0017-9310(91)90282-J
  4. Amon, C. H. and Mikic, B. B., 1991, Spectral Element Simulations of Unsteady Forced Convective Heat Transfer: Application to Heat Exchanger Geometries, Numerical Heat Transfer, Vol. 19, pp. 1-19 https://doi.org/10.1080/10407789108944835
  5. Azar, K., 1992, Enhanced Cooling of Electric Components by Flow Oscillation, Journal of Thermophysics Heat Transfer, Vol. 6, pp. 700-706 https://doi.org/10.2514/3.11554
  6. Rhee, G. H. and Sung, H.J., 2000, Enhancement of Heat Transfer in Turbulent Separated and Reattaching Flow by Local Forcing, Numerical Heat Transfer Part A, Vol. 37, No.7, pp, 733-753
  7. Rhee, G. H., Kim, S. Y and Sung, H.J., 2002, Flow Control and Heat Transfer Enhancement from a Heated Block by an Inflow Pulsation (I) Flow Field Computation, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 14, No. 7, pp. 592-598