Performance Analysis of Heat Transfer Enhancement in Tube by Using Alternate Axis Serrated Side Insert

Authors

  • Gaurao S. Dharme, Yogesh B. Jamnik

Keywords:

Heat transfer enhancement, Serrated side insert, turbulent flow, Nusselt number, Friction factor, Thermo-hydraulic performance, Passive augmentation technique.

Abstract

This study investigates the enhancement of convective heat transfer in circular tubes using alternate axis serrated side inserts under turbulent flow conditions. The use of passive heat transfer enhancement techniques has gained considerable importance in thermal engineering applications such as heat exchangers, condensers, boilers, refrigeration systems, and process industries. Serrated side inserts create swirl flow, secondary vortices, and flow disturbances that significantly improve thermal performance. The present research analyzes the thermal behavior, pressure drop characteristics, friction factor variation, and thermo-hydraulic performance of a tube fitted with alternate axis serrated side inserts. Experimental and numerical datasets were considered for Reynolds numbers ranging from 5000 to 25000. Results indicate that the Nusselt number increases substantially with insert utilization, while friction factor also rises due to turbulence enhancement. The alternate axis serrated side insert provides improved heat transfer efficiency compared to conventional twisted tape inserts. The study concludes that optimized serration geometry and alternate axis configuration can effectively improve heat exchanger performance while maintaining acceptable pumping power requirements.

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References

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Published

28.02.2023

How to Cite

Gaurao S. Dharme. (2023). Performance Analysis of Heat Transfer Enhancement in Tube by Using Alternate Axis Serrated Side Insert. International Journal of Intelligent Systems and Applications in Engineering, 11(2s), 444–453. Retrieved from https://www.ijisae.org/index.php/IJISAE/article/view/8254

Issue

Vol. 11 No. 2s (2023)

Section

Research Article

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Copyright (c) 2026 Gaurao S. Dharme, Yogesh B. Jamnik

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