THERMAL SCIENCE

International Scientific Journal

Jinxing Wu

,

Tianwei Gu

,

Shiwu Hou

,

Jiahui Yi

,

Peng Shao

IMPROVEMENT OF THE HEAT EXCHANGE CHARACTERISTICS OF PARALLEL CORRUGATED FINNED TUBES BY PERFORATION

ABSTRACT
To further enhance the heat exchange performance of parallel corrugated fins (PCF), this study proposes perforation on PCF and comparison and analyze the velocity and temperature fields of PCF and perforated PCF(PPCF). It was found that perforation can reduce the thickness of the temperature boundary layer, thereby enhance the convective heat transfer efficiency. Under the operating conditions where Re is 9000-21000, the influence laws of the perforation position parameter Sl on the heat exchange performance were studied. The numerical simulation results show that when Sl = 5/4, the heat transfer enhancement effect of the perforated structure is the best. Based on the field synergy theory, the enhanced heat transfer mechanism of PPCF was analyzed. This research provides a new solution for the structural improvement of PCF.
KEYWORDS
corrugated finned tube, heat exchanger, perforated fin, Heat Transfer Enhancement, numerical simulation
PAPER SUBMITTED: 2025-10-29
PAPER REVISED: 2025-12-29
PAPER ACCEPTED: 2026-01-05
PUBLISHED ONLINE: 2026-03-07
DOI REFERENCE: https://doi.org/10.2298/TSCI251029020W
REFERENCES
[1] Li, X. Y., et al., Experimental study on heat transfer and pressure drop characteristics of fin-and-tube surface with four convex-strips around each tube. International Journal of Heat and Mass Transfer, 116 (2018), pp. 1085-95
[2] Li, X. Y., et al., Numerical study on the heat transfer and pressure drop characteristics of fin-and-tube surface with four round-convex strips around each tube. International Journal of Heat and Mass Transfer, 158 (2020), 120034
[3] Wang, Z., Ouyang, X., Numerical simulation of heat transfer and flow characteristics for plate fin-and-tube heat exchanger with ring-bridge slit fins. Thermal Science, 25 (2023), 1, pp. 77-88
[4] Nemati, H., et al., Shape optimisation of air-cooled finned-tube heat exchangers. International Journal of Thermal Sciences, 150 (2020), 106233
[5] Nemati, H., et al., Natural convection heat transfer over horizontal annular elliptical finned tubes. International Communications in Heat and Mass Transfer, 118 (2020), 104823
[6] Nemati, H., Samivand S., Numerical Study of Flow Over Annular Elliptical Finned Tube Heat Exchangers. Arabian Journal for Science and Engineering, 41 (2016), pp. 4625-4634
[7] Zhang, D., et al., Mathematical Investigation of Heat Transfer Characteristics and Parameter Optimization of Integral Rolled Spiral Finned Tube Bundle Heat Exchangers. Processes, 11 (2023)
[8] Zhang, D., et al., Experimental study on heat transfer and flow resistance characteristics of integral rolled spiral finned tube bundles heat exchangers. Case Studies in Thermal Engineering, 52 (2023)
[9] Kang, H. J., et al., Experimental study on heat transfer and pressure drop characteristics of four types of plate fin-and-tube heat exchanger surfaces. Journal of Thermal Science, 3 (1994), pp. 34-
[10] Wang, C. C., et al., Effect of Waffle Height on the Air-Side Performance of Wavy Fin-and-Tube Heat Exchangers under Dehumidifying Conditions. Heat Transfer Engineering, 20 (2000), pp. 45-
[11] Wang, C. C., et al., Empirical correlations for heat transfer and flow friction characteristics of herringbone wavy fin-and-tube heat exchangers. International Journal of Refrigeration, 25 (2002), 5, pp. 673-680
[12] Youn, B., Kim, N. H., An experimental investigation on the airside performance of fin-and-tube heat exchangers having sinusoidal wave fins. Heat and Mass Transfer, 43 (2006), pp. 1249-1262
[13] Sadeghianjahromi, A., et al., Heat transfer enhancement of wavy fin-and-tube heat exchangers via innovative compound designs. International Journal of Thermal Sciences, 149 (2020), 110470
[14] Ouyang, X., Hu, H., Simulation study on optimal structure of circular corrugated finned tube. International Journal of Thermal Sciences, 179 (2022), 107622
[15] Song, K., et al., Heat transfer characteristics of concave and convex curved vortex generators in the channel of plate heat exchanger under laminar flow. International Journal of Thermal Sciences, 137 (2019), pp. 215-228
[16] Kataoka, K., et al., Heat/mass transfer in taylor vortex flow with constant axial flow rates. International Journal of Heat and Mass Transfer, 20 (1977), 1, pp. 57-63
[17] Johnson, T, R., Joubert, P, N., The influence of vortex generators on the drag and heat transfer from a circular cylinder normal to an airstream. ASME Journal of Heat and Mass Transfer, 90 (1969), 1, pp. 91-99
[18] Wang, Y., et al., Numerical investigation on air-side heat transfer enhancement of wavy finned tube air cooler for underground tunnels. Applied Thermal Engineering, 269 (2025), 126061
[19] Liu, X., et al., Numerical analysis on heat transfer enhancement of wavy fin-tube heat exchangers for air-conditioning applications. Applied Thermal Engineering, 199 (2021), 117597
[20] Su, M., et al., Numerical design of efficient slit fin surfaces with strips in different directions. International Journal of Thermal Sciences, 192 (2023), 108421
[21] Karabacak, R., Yakar, G., Forced convection heat transfer and pressure drop for a horizontal cylinder with vertically attached imperforate and perforated circular fins. Energy Conversion and Management, 52 (2011), 8-9, pp. 2785-2793
[22] Song, K., et al., Thermal performance promotion of a novel double-tube heat exchanger by helical fin with perforations. International Communications in Heat and Mass Transfer, 150 (2023), 07189
[23] Zaidan, M. H., et al., Assessment of heat transfer and fluid flow characteristics within finned flat tube. Case Studies in Thermal Engineering, 12 (2018), pp. 557-562
[24] Wu, J., et al., Numerical Analysis of Shell Side Performance of Spiral finned Self-supporting Heat Exchanger. Petroleum refining and chemical engineering, (2007), 08, pp. 66-70
[25] Wu, J., et al., Experimental Study on Enhanced Heat Exchange of Spiral Finned Self-supporting Heat Exchanger. Thermal Energy and Power Engineering, (2008), 02, pp. 157-60+215-6
[26] Wu, J., et al., Numerical study on fluid flow and heat transfer characteristics in spiral wound heat exchanger with helical rods. International Communications in Heat and Mass Transfer, 167 (2025), 109622
[27] Wu, J., et al., Numerical study on heat transfer characteristics of helically coiled grooved elliptical tube heat exchanger. International Journal of Heat and Fluid Flow, 110 (2024), 109624
[28] Nemati, H., Samivand, S., Numerical Study of Flow Over Annular Elliptical Finned Tube Heat Exchangers. Arabian Journal for Science and Engineering, (2016), pp. 4625-4634
[29] Guo, Z. Y., et al., The field synergy (coordination) principle and its applications in enhancing single phase convective heat transfer. International Journal of Heat and Mass Transfer, (2005), pp. 1797-1807
[30] FaJiang, H., et al., Experimental Investigation of Heat Transfer and Flowing Resistance for Air Flow Cross over Spiral Finned Tube Heat Exchanger. Energy Procedia, 17 (2012), pp. 741-749
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Improvement of the heat exchange characteristics of parallel corrugated finned tubes by perforation

© 2026 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence