한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
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유동 방향으로 기울어진 사각 핀-휜 열교환기의 유동 및 열전달 특성에 대한 수치적 연구

A NUMERICAL STUDY ON THE FLOW AND HEAT TRANSFER CHARACTERISTICS OF A HEAT EXCHANGER HAVING RECTANGULAR PIN-FINS SLANTED IN THE FLOW DIRECTION

  • 서준호 (부산대학교 기계공학부) ;
  • 김민성 (부산대학교 기계공학부) ;
  • 하만영 (부산대학교 기계공학부) ;
  • 민준기 (부산대학교 롤스로이스 대학기술센터)
  • Seo, J.H. (School of Mechanical Engineering, Pusan National University) ;
  • Kim, M. (School of Mechanical Engineering, Pusan National University) ;
  • Ha, M.Y. (School of Mechanical Engineering, Pusan National University) ;
  • Min, J.K. (Rolls-Royce University Technology Centre in Thermal Management, Pusan National University)
  • 투고 : 2016.05.17
  • 심사 : 2016.08.18
  • 발행 : 2016.09.30
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초록

The flow and heat transfer characteristics of a heat exchanger having rectangular pin-fin in the flow direction have been investigated numerically. On the bottom plate, the convective boundary conditions for the hot side was given, and the fins were arranged in a channel-type geometric model using the periodic boundary condition in the span-wise direction. Three-dimensional numerical calculations for the flow and conjugate heat transfer problem were conducted using SIMPLE algorithm and $k-{\varepsilon}$ turbulence model. For the slanted pin-fin models, it was found that the downward cooling flow is generated due to the downward pressure gradient component, which can enhance the heat transfer performance near the bottom surface and the fin stem region. Four different inclined angles were considered in the Reynolds number range of 13,500-55,000. The aero-thermal performance of the slanted pin-fin heat exchangers, such as the volume and area goodness factors, were summarized and compared with the baseline plate-fin type heat exchanger quantitatively.

키워드

참고문헌

  1. 2009, Min, J.K., Jeong, J.H., Ha, M.Y. and Kim, K.S., "High temperature heat exchanger studies for applications to gas turbines," Heat Mass Transfer, Vol.46, pp.175-186. https://doi.org/10.1007/s00231-009-0560-3
  2. 2014, Kim, S., Min, J.K., Ha, M.Y. and Son, C., "Investigation of high-speed bypass effect on the performance of the surface air oil heat exchanger for an aero engine," International Journal of Heat and Mass Transfer, Vol.77, pp.321-334. https://doi.org/10.1016/j.ijheatmasstransfer.2014.05.025
  3. 2007, Jeng, T.M. and Tzeng, S.C., "Pressure drop and heat transfer of sqaure pin-fin arrays in in-line and staggered arrangements," International Journal of Heat and Mass Transfer, 50, pp.2364-2375. https://doi.org/10.1016/j.ijheatmasstransfer.2006.10.028
  4. 1994, Kang, H.J., Li, W., Li, H.Z., Xin, R.C. and Tao, W.Q., "Experimental study on heat transfer and pressure drop characteristic of four types of plate fin-and-tube heat exchanger surfaces," Int. J. Thermal Fluid Sci., 3(1), pp.34-42.
  5. 1996, Shaukatullah, H., Storr, W.R., Hansen, B.J. and Gaynes, M.A., "Design and optimization of pin fin heat sinks for low velocity applications," In: Proceedings of the Twelfth IEEE SEMI-THERM Symposium, Austin, TX, pp.151-163.
  6. 2001, Jonsson, H. and Moshfegh, B., "Modeling of the thermal and hydraulic performance of plate fin, strip fin, and pin fin heat sinks influence of flow by-pass," IEEE Trans. Components Packaging Technology, Vol.24, (2), pp.142-149. https://doi.org/10.1109/6144.926376
  7. 1993, Fowler, A.J. and Bejan, A., "Forced convection in banks of inclined cylinders at low Reynolds number," Int. J. Heat and Fluid Flow, Vol.15, No.2, pp.90-99. https://doi.org/10.1016/0142-727X(94)90061-2
  8. 2011, Park, J.S., Kim, K.M., Lee, D.H. and Cho, H.H., "Heat transfer in rotating channel with inclined pin-fins," Journal of Turbomachinery, Vol.133 021003, (2), pp.1-8.
  9. 2015, Abdoli, A., Jimenez, G. and Dulikravich, G.S., "Thermo-fluid analysis of micro pin-fin array cooling configurations for high heat fluxes with a hot spot," International Journal of Thermal Sciences, 90, pp.290-297. https://doi.org/10.1016/j.ijthermalsci.2014.12.021
  10. 2016, Kim, M., Ha, M.Y. and Min, J.K., "A numerical study on various pin fin shaped surface air oil heat exchangers for an aero gas-turbine engine," International Journal of Heat and Mass Transfer, Vol.93. pp.637-652. https://doi.org/10.1016/j.ijheatmasstransfer.2015.10.035
  11. 2006, White, F.M., Viscous fluid flow, 3rd edition.
  12. 1978, Shah, R.K. and London, A.L., Laminar flow forced convection in ducts, Academic Press, Inc, New York(1978).

피인용 문헌

  1. 평판-휜 열교환기의 열-수력학적 성능에 대한 고속 바이패스 영향의 수치적 연구 vol.22, pp.1, 2016, https://doi.org/10.6112/kscfe.2017.22.1.067