THERMAL SCIENCE

International Scientific Journal

NUMERICAL SIMULATION OF LOUVER FIN HEAT EXCHANGERS WITH VORTEX GENERATORS

ABSTRACT
This paper proposes a new type of vortex generator fin structure and employs CFD method to simulate the fin structure. It then studies the temperature and flow fields of vortex generator fins and ordinary louver fins, and compares the heat transfer and flow resistance characteristics of the two types of fins. The results indicate that when the Reynolds number is between 100 and 500, the heat transfer factor of the novel fin structure exhibits an increase of 5.05% to 8.35%, while its resistance factor shows a rise of 5.77% to 12.14%. Furthermore, the comprehensive factor of the fin structure demonstrates an enhancement of 3.11% to 4.29%. Additionally, the Ω criterion indicates that the distribution of vortices between the fins is uniform, and a longitudinal vortex network is generated between the fins due to the presence of vortex generators. This results in a higher average temperature near the fins compared to ordinary fins, as well as a faster temperature rise. This paper serves as a reference for further research on high-efficiency finned heat exchangers.
KEYWORDS
PAPER SUBMITTED: 2023-11-24
PAPER REVISED: 2024-05-10
PAPER ACCEPTED: 2024-05-10
PUBLISHED ONLINE: 2025-07-06
DOI REFERENCE: https://doi.org/10.2298/TSCI2503889C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 3, PAGES [1889 - 1897]
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2025 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