Numerical Study of Heat Transfer Characteristics in Narrow Channel with Staggered Dimples

Hui Yong Chen; Shuai Guo

doi:10.4028/www.scientific.net/AMM.535.71

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 535Numerical Study of Heat Transfer Characteristics...

Numerical Study of Heat Transfer Characteristics in Narrow Channel with Staggered Dimples

Abstract:

In this paper, numerical simulations were conducted to investigate the flow and heat transfer characteristics of dimple channels. To contrast with the channel with dimples, a numerical study on a smooth plate channel was also made. The results show that in dimple channel, flow separation occurred near dimple windward edge, low heat transfer rate was observed in these regions and dimple wake region owned high heat transfer rate. The calculation results show that the mean Nusselt numbers of dimple channel were 27.58 and the amplification is 15.2%. The friction factor of dimple channel is 0.018 and decrease by 5.26%, the thermal performance parameter TP is 1.18. It can be seen that the heat transfer in the channel is enhanced markedly with the staggered dimples.

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Periodical:

Applied Mechanics and Materials (Volume 535)

Pages:

71-74

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.535.71

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Online since:

February 2014

Authors:

Hui Yong Chen, Shuai Guo

Keywords:

Heat Transfer Enhancement, Narrow Channel, Numerical Study, Staggered Dimples

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References

[1] H.K. Moon, T. O'Connell, B. Glezer, Channel height effect on heat transfer and friction in a dimpled passage, Journal of Engineering for Gas Turbines and Power. 122 (2000) 307-313.

DOI: 10.1115/1.483208

Google Scholar

[2] G.I. Mahmood, M.L. Hill, D.L. Nelson, et al, Local heat transfer and flow structure on and above a dimpled surface in a channel, Journal of Turbomachinery. 123 (2001) 115-123.

DOI: 10.1115/1.1333694

Google Scholar

[3] J.B. Lan, Y. H. Xie, D. Zhang, Heat transfer enhancement in micro-channel with dimples and protrusions, Journal of Xi'an Jiaotong University. 7 (2011) 89-94.

Google Scholar

[4] Z.Y. Shen, Y.H. Xie, D. Zhang, J.B. Lan, Heat transfer and flow friction performance of rectangular channel with different dimple/protrusion structures, Journal of Xi'an Jiaotong University. 11 (2011) 52-57.

Google Scholar

[5] D. Zhang, Z.Y. Shen, Y.H. Xie, Study on flow control and heat transfer performance based on secondary dimples /protrusion, Proceedings of the CSEE. 17 (2012) 44-50.

Google Scholar