Research Article

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

Volume: 10 Number: 2 July 16, 2026

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

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.

Keywords

References

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Details

Primary Language

English

Subjects

Heat Transfer in Automotive, Automotive Engineering (Other)

Journal Section

Research Article

Publication Date

July 16, 2026

Submission Date

April 14, 2026

Acceptance Date

June 8, 2026

Published in Issue

Year 2026 Volume: 10 Number: 2

APA
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, 10(2), 482-500. https://doi.org/10.30939/ijastech..1930008
AMA
1.Singh P, Sethi H, Dogra S, Kumar S, Vyas G. Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions. IJASTECH. 2026;10(2):482-500. doi:10.30939/ijastech.1930008
Chicago
Singh, Paramveer, Himakshi Sethi, Sudhanshu Dogra, Sanjeev Kumar, and Gaurav Vyas. 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 10 (2): 482-500. https://doi.org/10.30939/ijastech. 1930008.
EndNote
Singh P, Sethi H, Dogra S, Kumar S, Vyas G (July 1, 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 10 2 482–500.
IEEE
[1]P. Singh, H. Sethi, S. Dogra, S. Kumar, and G. Vyas, “Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions”, IJASTECH, vol. 10, no. 2, pp. 482–500, July 2026, doi: 10.30939/ijastech..1930008.
ISNAD
Singh, Paramveer - Sethi, Himakshi - Dogra, Sudhanshu - Kumar, Sanjeev - Vyas, Gaurav. “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 10/2 (July 1, 2026): 482-500. https://doi.org/10.30939/ijastech. 1930008.
JAMA
1.Singh P, Sethi H, Dogra S, Kumar S, Vyas G. Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions. IJASTECH. 2026;10:482–500.
MLA
Singh, Paramveer, et al. “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, vol. 10, no. 2, July 2026, pp. 482-00, doi:10.30939/ijastech. 1930008.
Vancouver
1.Paramveer Singh, Himakshi Sethi, Sudhanshu Dogra, Sanjeev Kumar, Gaurav Vyas. Computational Fluid Dynamics and ε–NTU Based Thermal Performance Analysis of Louvered and Plain-Fin Automotive Radiators under Seasonal Conditions. IJASTECH. 2026 Jul. 1;10(2):482-500. doi:10.30939/ijastech. 1930008


International Journal of Automotive Science and Technology (IJASTECH) is published by Society of Automotive Engineers Turkey

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