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Vortex controlled heat transfer in eight row plate fin and tube exchangers: CFD derived air side Nusselt correlations
Mateusz Marcinkowski, Kacper Korab
https://arxiv.org/abs/2509.08611

Vortex controlled heat transfer in eight row plate fin and tube exchangers: CFD derived air side Nusselt correlations
This paper investigates and characterizes the row dependent thermal performance of an 8 row finned tube heat exchanger (HEX) with an offset tube arrangement and continuous flat fins. Computational fluid dynamics (CFD) simulations reveal distinct hydraulic thermal behavior across the tube rows, with the first, second, and eighth rows exhibiting significantly higher heat transfer efficiency than the average for the entire HEX under specific flow conditions. At air velocities below 3 ms-1, the fir…