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Numerical simulation of heat transfer and flow of cooling air in triangular wavy fin channels

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Abstract

Numerical computation models of air cooling heat transfer and flow behaviors in triangular wavy fin channels (TWFC) were established with structural parameters of fins considered. The air side properties of heat transfer coefficient and pressure drop are displayed with variable structural parameters of fins and inlet velocities of cooling air. Within the range of simulation, TWFC has the best comprehensive performance when inlet velocity v in=4−10 m/s. Compared with those of straight fins, the simulation results reveal that the triangular wavy fin channels are of higher heat transfer performances especially with the fin structural parameters of fin-height F h=9.0 mm, fin-pitch F p=2.5−3.0 mm, fin-wavelength λ=14.0–17.5 mm and fin-wave-amplitude A=1.0–1.2 mm. The correlations of both heat transfer factor and friction factor are presented, and the deviations from the experimental measurements are within 20%.

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Authors and Affiliations

  1. School of Energy and Environment, Southeast University, Nanjing, 210096, China

    Ming-long Ni  (倪明龙), Ya-ping Chen  (陈亚平), Cong Dong  (董聪) & Jia-feng Wu  (吴嘉峰)

  2. Jiangsu Electric Power Design Institute, Nanjing, 211102, China

    Ming-long Ni  (倪明龙)

Authors
  1. Ming-long Ni  (倪明龙)
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  2. Ya-ping Chen  (陈亚平)
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  3. Cong Dong  (董聪)
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  4. Jia-feng Wu  (吴嘉峰)
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Corresponding author

Correspondence to Ya-ping Chen  (陈亚平).

Additional information

Foundation item: Project(50976022) supported by the National Natural Science Foundation of China; Project(BY2011155) supported by the Provincial Science and Technology Innovation and Transformation of Achievements of Special Fund Project of Jiangsu Province, China

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Ni, Ml., Chen, Yp., Dong, C. et al. Numerical simulation of heat transfer and flow of cooling air in triangular wavy fin channels. J. Cent. South Univ. 21, 2759–2765 (2014). https://doi.org/10.1007/s11771-014-2238-3

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  • DOI: https://doi.org/10.1007/s11771-014-2238-3

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