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Journals / International Journal of Automotive Science and Technology / 2026 / Volume: 10 Issue: 2

Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions

Paramveer Singh(Lovely Professional University)0009-0009-8698-3610
Himakshi Sethi(Lovely Professional University)0009-0001-8308-6174
Sudhanshu Dogra(Lovely Professional University)0000-0003-1689-5585
Sanjeev Kumar(Lovely Professional University)0000-0003-2188-2180
Gaurav Vyas(Lovely Professional University)0000-0003-3527-0118
Pages
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Publication Date
2026-07-16
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The main conclusion of this research is that louver finned radiators have better thermal characteristics than plain finned radiators in all conditions.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This research seeks to examine the thermal characteristics of plain finned and louvered finned radiators in various seasonal conditions using analytical methods and computational fluid dynamics.
📊
Key Findings & Data:The main aim of this research is to assess the impact of ambient temperatures in different seasons, such as summer, spring, and winter, and the mass flow rates of the coolant on the efficiency of automotive radiator.
💡
Conclusion & Impact:The main conclusion of this research is that louver finned radiators have better thermal characteristics than plain finned radiators in all conditions.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Automotive Radiator · Louvered Finned · Plain Finned

Abstract

This research seeks to examine the thermal characteristics of plain finned and louvered finned radiators in various seasonal conditions using analytical methods and computational fluid dynamics. The main aim of this research is to assess the impact of ambient temperatures in different seasons, such as summer, spring, and winter, and the mass flow rates of the coolant on the efficiency of automotive radiator. The results of this research indicate that louver finned radiators have better thermal characteristics compared to plain finned radiators, as they have lower outlet temperatures and higher heat transfer coefficients. The results also indicate that the effectiveness of the radiator is reduced as the mass flow rate of the coolant increases, and that in winter, the radiator has the highest heat dissipation capacity due to the highest gradient between the coolant and the ambient temperatures. The difference between the CFD and analytical methods is also less than 5%, which confirms the accuracy of the model. The significance of this research is based on the fact that it considers realistic seasonal conditions, which are normally not taken into account in most analytical models that assume constant temperatures. The main conclusion of this research is that louver finned radiators have better thermal characteristics than plain finned radiators in all conditions.

🔖

Cite This Article

Singh, P., Sethi, H., Dogra, S., Kumar, S., Vyas, G. (2026). Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions. International Journal of Automotive Science and Technology, Volume: 10 Issue: 2. https://doi.org/10.30939/ijastech..1930008

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References (46)

  1. Sriwijaya SB, Kristianti T. Analysis of heat transfer in vehicle engine cooling systems using radiators with finned variations. Int J Health Econ Soc Sci. 2025;7(2). https://doi.org/10.56338/ijhess.v7i2.7285
  2. Abdulkhaev Z, Abdujalilova S, Abumalikov R. Control of heat transfer ability of radiators using thermovalve. J Constr Eng Technol. 2023;1(1). https://doi.org/10.5281/zenodo.8064529
  3. Saravanan R, Abhishek HKC. Experimental study and CFD analysis of thermal performance improvement of car radiator by CuO/glycerol nanofluid. Int J Creat Res Thoughts. 2024;12(2).
  4. Sahu R, Dwivedi VK. Computational fluid dynamics investigation of heat transfer efficiency in automotive radiators using nanofluid coolants. Int J Innov Res Technol Sci. 2024;12(2):32-39.
  5. Kolakoti A, Setiyo M, Al Husaeni DN, Nandiyanto ABD. Enhancing heat transfer performance of automotive car radiator using camphor nanoparticles: experimental study with bibliometric analysis. Teknomekanik. 2023;6(2). https://doi.org/10.24036/teknomekanik.v6i2.25072
  6. Yadav JP, Singh BR. Study on performance evaluation of automotive radiator. Samriddhi J Phys Sci Eng Technol. 2011;2(2). https://doi.org/10.18090/samriddhi.v2i2.1604
  7. Lin JY, Lin C, Chao AF, Li J, Fei CW, Ge JB. Design and performance evaluation of novel wing-shaped finned radiators for advanced aero-engines. Propuls Power Res. 2025;14(3). https://doi.org/10.1016/j.jppr.2025.08.001
  8. Ebrahimi M, Farhadi M, Rezaniakolaei A. Effect of turbulators on sediment accumulation in home heating radiators: experimental analysis. Int J Eng. 2025;38(7):1708-1725. https://doi.org/10.5829/ije.2025.38.07a.21
  9. Kumar SK, Surakasi R, Sudha S, Suresh M, Juliyana SJ, Gudadhe N. Design and thermal analysis of lightweight radiator for automobile applications. J Therm Eng. 2025;11(6):1627-1638. https://doi.org/10.14744/thermal.0001029
  10. Calisir T, Yazar HO, Baskaya S. Evaluation of flow field over panel radiators to investigate the effect of different convector geometries. J Build Eng. 2021;33:101600. https://doi.org/10.1016/j.jobe.2020.101600
  11. Gibson AS, Poyntz-Wright O, Oldfield MK, Bishop A, Iglesias A, Humphries ME, Hager PB. Verification of an actively shuttered dust-resilient radiator for lunar applications. Int Conf Environ Syst. 2025;2025-271. https://doi.org/10.32865/2346/102714
  12. Vinukonda N, Sharma VK. Review on contemporary trends in radiator design and testing of automobile radiators. Int J Mech Eng Technol. 2018;9(12):671-680.
  13. Rama M, Kumar MA, Vemunuri AT, Valusa NT, Yasin MD. Design and thermal analysis of an automotive radiator for enhancing flow uniformity using CFD. Int Res J Eng Technol. 2022;9(4):2872-2879.
  14. Ukueje WE, Abam FI, Obi A. A perspective review on thermal conductivity of hybrid nanofluids and their application in automobile radiator cooling. J Nanotechnol. 2022;2022:2187932. https://doi.org/10.1155/2022/2187932
  15. Leibach R, Thaikattil G, Sanzi J, Bush M. Preliminary findings of lunar dust testing on radiator performance. In: Nuclear and Emerging Technologies for Space; 2025.
  16. Hassaan AM. An experimental investigation examining the usage of a hybrid nanofluid in an automobile radiator. Sci Rep. 2024;14:27597. https://doi.org/10.1038/s41598-024-78631-9
  17. Radhi SS, Al-Khafaji ZS, Falah MW. Sustainable heating system by infrared radiators. Sustain Eng Innov. 2022;4(1). https://doi.org/10.37868/sei.v4i1.id82
  18. Nanbu K, Kumagai K, Kashiwagi S, Hinode F, Muto T, Hama H. Study of Cherenkov diffraction radiation from radiator with periodic structure in THz-region. In: Proc IPAC'25; 2025 Jun; Taipei, Taiwan. p. 2874-2877. https://doi.org/10.18429/JACoW-IPAC2025-THPM090
  19. Pan C, Ziviani D, Braun JE. Performance evaluation of a vapor-compression-cycle-based heat pump system for a lunar habitat under the impact of dust deposits on the coupled radiators. Acta Astronaut. 2022;194:22-33. https://doi.org/10.1016/j.actaastro.2022.01.040
  20. Nandiyanto ABD, Al Husaeni DN, Al Obaidi ASM, Hammouti B. Progress in the developments of heat transfer, nanoparticles in fluids, and automotive radiators: review and computational bibliometric analysis. Automot Exp. 2024;7(2). https://doi.org/10.31603/ae.10580
  21. Zhao SC, Liu Q, Wilkinson M, Wilson G, Wang ZD. A reduced radiator model for simplification of ONAN transformer CFD simulation. IEEE Trans Power Del. 2022. https://doi.org/10.1109/TPWRD.2022.3142889
  22. Aditi, Farooque Z, Chauhan NR. Comparative study of nanofluids as coolants in a car radiator. IOP Conf Ser Mater Sci Eng. 2022;1228(1):012011. https://doi.org/10.1088/1757-899X/1228/1/012011
  23. Capozzoli A, Curcio C, Liseno A. Dimensioning flat equivalent radiators. IEEE Trans Antennas Propag. 2023;71(4). https://doi.org/10.1109/TAP.2023.3260919
  24. Eder K, Zholobenko W, Stegmeir A, Bernert M, Coster D, Jenko F. Simulating X-point radiator turbulence. Nucl Fusion. 2025. https://doi.org/10.1088/1741-4326/adf901
  25. Gosavi GD, Sivamurugan P, Shajahan MI, Bharathiraja. Experimental analysis of nanofluid circulation in automobile radiators: thermal efficiency and flow behaviour. J Environ Nanotechnol. 2025;14(3). https://doi.org/10.13074/jent.2025.06.2511363
  26. Hardeep S, David T, Graham R, Eshtiaghi N, Ichiyanagi M, Suzuki T. Experimental investigation of thermal performance of novel finned radiators for automotive cooling systems. J Therm Sci. 2024;33(5). https://doi.org/10.1007/s11630-024-1992-2
  27. Preller F, Schlitt R, Bodendieck F, Krepl O, Beck F. Deployable passive radiator development. Proc 51st Int Conf Environ Syst. 2022;2022-3489. https://doi.org/10.2514/6.2022-3489
  28. Meng J, Zhang X, Feng H, Wei T, Shi S. Study on the noise and structural parameters of radiators for engineering vehicles. IAENG Int J Appl Math. 2025;55(6):1546-1554.
  29. Shah AH, Ali R, Memon TA, Kashif M, Bhangwar S, Tunio QB, Luhur MR. Investigation of thermal performance enhancement in automotive radiators using Al₂O₃-water nanofluid. Spectr Eng Sci. 2025;3(9). https://doi.org/10.5281/zenodo.17150612
  30. Ebrahimi M, Farhadi M, Rezaniakolaei A. Assessing the effect of sediment deposits on the performance of residential heating radiators: an experimental investigation. J Heat Mass Transf Res. 2024;11(2):167-178. https://doi.org/10.22075/JHMTR.2024.31840.1479
  31. Arkusz K, Pasik K, Jędrzejewska A, Klekiel T, Woźniak W, Nycz M, et al. Shedding light on the problem: influence of the radiator power, source-sample distance, and exposure time on the performance of UVC lamps in laboratory and real-world conditions. PLoS One. 2024;19(4):e0302258. https://doi.org/10.1371/journal.pone.0302258
  32. Maikut SO, Toyabina CS, Drozd IM. Simulation and analysis of heat dissipation in compact routers: efficiency of radiators and case perforations. J Nano Electron Phys. 2025;17(2). https://doi.org/10.21272/jnep.17(2).02008
  33. Zhang Z, Liu Y, Wang J. Optimal design of multi-channel water-cooled radiator for motor controller of new energy vehicle. CES Trans Electr Mach Syst. 2022;6(1). https://doi.org/10.30941/CESTEMS.2022.00012
  34. Bellizzi G, Capozzoli A, Curcio C, Liseno A. Scaled dimensioning of flat equivalent radiators. IEEE Antennas Wirel Propag Lett. 2025;24(11). https://doi.org/10.1109/LAWP.2025.3580848
  35. Ullah I, Ullah S, Aziz Q, Ibrahim S, Hummam H, Khan S. Machine learning-based prediction and optimization of radiator cooling efficiency using Al₂O₃-water nanofluid. Spectr Eng Sci. 2025;3(10). https://doi.org/10.5281/zenodo.17492084
  36. Mitkar S. Thermal performance analysis of a cross-flow automotive radiator under variable air and coolant flow. Research Square. 2025. https://doi.org/10.21203/rs.3.rs-7946285/v1
  37. Dağdeviren A, Gedik E, Keçebaş A, Pazarlıoğlu HK, Arslan K, Alsabery AI. Effect of Al₂O₃-SiO₂/water hybrid nanofluid filled in a square enclosure on the natural convective heat transfer characteristics: a numerical study. J Nanofluids. 2022;11(5):772-781. https://doi.org/10.1166/jon.2022.1881
  38. Dağdeviren A, Gürsoy E, Gürdal M, Gedik E, Arslan K. Turbulent thermal-magneto convection in a teardrop-shaped dimpled tube: an experimental and numerical study. Int J Therm Sci. 2026;220:110403. https://doi.org/10.1016/j.ijthermalsci.2025.110403
  39. Dağdeviren A, Gürsoy E, Gedik E, Arslan K. Heat transfer and entropy analysis of Fe₃O₄/H₂O ferrofluid in teardrop-dimpled circular tubes. J Therm Anal Calorim. 2025;150:19657-19676. https://doi.org/10.1007/s10973-025-14972-5
  40. Gürsoy E, Pazarlıoğlu HK, Dağdeviren A, Gürdal M, Gedik E, Arslan K, Kurt H. Energy analysis of magnetite nanofluid flowing in newly designed sudden expansion tube retrofitted with dimpled fin. Int J Heat Mass Transf. 2022;199:123446. https://doi.org/10.1016/j.ijheatmasstransfer.2022.123446
  41. Gürsoy E, Gürdal M, Pazarlıoğlu HK, Dağdeviren A, Tekir M, Arslan K, Gedik E, Minea AA, Kurt H. Effect of magnetic field locations on thermo-magnetic convection performance of Fe₃O₄/H₂O ferrofluid flowing in a novel dimpled tube: an experimental study. Appl Therm Eng. 2023;226:120305. https://doi.org/10.1016/j.applthermaleng.2023.120305
  42. Gürsoy E, Gürdal M, Gedik E, Arslan K, Dağdeviren A. Experimental and numerical study on ferrohydrodynamic and magneto-convection of Fe₃O₄/water ferrofluid in a sudden expansion tube with dimpled fins. J Taiwan Inst Chem Eng. 2024;164:105676. https://doi.org/10.1016/j.jtice.2024.105676
  43. Gürsoy E, Pazarlıoğlu HK, Gürdal M, Gedik E, Arslan K, Dağdeviren A. Investigation of magneto-convection characteristics in a sudden expanding channel with convex surface geometry under thermally developing flow conditions. Int J Numer Methods Heat Fluid Flow. 2024;34(5). https://doi.org/10.1108/HFF-11-2023-0703
  44. Altwieb M, Mishra R, Aliyu AM, Kubiak KJ. Heat transfer enhancement by perforated and louvred finned heat exchangers. Energies. 2022;15(2):400. https://doi.org/10.3390/en15020400
  45. Feleke DS, Getie MZ, Minale TA. Numerical investigation of louver edges effect on the performances of louvered finned compact heat exchanger. Heliyon. 2024;10(6):e27254. https://doi.org/10.1016/j.heliyon.2024.e27254
  46. Zhang X, Huang Y, Song J, Ma Z, Chen L, Li T. Numerical investigation of the air-side performance of louver fin-and-tube radiators having rectangular, tapered and airfoil section configuration. Energy Rep. 2022;8:11799-11809. https://doi.org/10.1016/j.egyr.2022.09.050