Heat transfer of swirling jet impinging on a flat surface with swirl generators
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Published:
Oct 7, 2018
Keywords:
Heat transfer heat transfer enhancement impinging jet swirl jets twisted tape
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Abstract
This paper presents a study on heat transfer enhancement by swirling impinging jets. The swirling jets were induced by inserting dual twisted tapes into jet nozzles. The effects of jet Reynolds number (4000 < Re < 16,000), jetto-plate spacing (2 < L/D < 8), tape twist ratio (y/W = 3, 4, 5, 6) and swirling direction were experimentally investigated. Numerical visualization was also carried out to study a behavior of the flow phenomena of swirling jets.
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How to Cite
Nanan, K., & Eiamsa‐ard, P. (2018). Heat transfer of swirling jet impinging on a flat surface with swirl generators. Journal of Research and Applications in Mechanical Engineering, 2(2), 103–110. Retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/149413
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RESEARCH ARTICLES
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References
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[6] Nanan, K., Changcharoen, W., Promvonge, P. and Eiamsa-ard, S. Flow structures and heat transfer of swirling jet impinging on a flat surface with twisted tape, Proceedings of 12th Asian Symposium on Visualization, paper no. 248.
[2] Caliskan, S., Baskaya, S. and Calisir, T. Experimental and numerical investigation of geometry effects on multiple impinging air jets, International Journal of Heat and Mass Transfer, Vol. 75, 2014, pp. 685-703.
[3] Nanan, K., Wongcharee, K., Nuntadusit, C. and Eiamsa-ard, S. Forced convective heat transfer by swirling impinging jets issuing from nozzles equipped with twisted tapes, International Communication in Heat and Mass Transfer, Vol. 39, 2012, pp. 644-652.
[4] Wang, X.L., Motala, D., Lu, T.J., Song, S.J. and Kim, T. Heat transfer of a circular impinging jet on a circular cylinder in crossflow, International Journal of Thermal Sciences, Vol. 78, 2014, pp. 1-8.
[5] San, J.Y. and Chen, J.J. Effects of jet-to-jet spacing and jet height on heat transfer characteristics of an impinging jet array, International Journal of Heat and Mass Transfer, Vol. 71, 2014, pp. 8-17.
[6] Nanan, K., Changcharoen, W., Promvonge, P. and Eiamsa-ard, S. Flow structures and heat transfer of swirling jet impinging on a flat surface with twisted tape, Proceedings of 12th Asian Symposium on Visualization, paper no. 248.