Numerical simulation of louver fin heat exchangers with vortex generators

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 ? 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.