Numerical Investigation on the Effect of Converging Channel in Crossflow Heat Exchanger
DOI:
https://doi.org/10.38032/scse.2025.3.180Keywords:
Crossflow Heat Exchanger, Rectangular Winglet Pair, Converging Channel, Heat transfer EnhancementAbstract
The objective of this numerical study is to investigate the effect of converging channel in crossflow heat exchanger using Rectangular Winglet Pair (RWP) in different arrangement from the tube center. For a defined converging angle, the placement of RWPs affects the heat exchanger performance. The FLUENT module of ANSYS version 2020 R1 was used to simulate the flow in a single strip of a crossflow heat exchanger to calculate the heat transfer coefficient and pressure drop. It was performed in low Reynolds number ranges from 550 to 960. Using those RWPs, heat transfer coefficient increases significantly as the converging channel accelerates the local flow around the tube and increases local Reynolds number that also affects in pressure drop also. Forward and backward arrangement provides better performance more specifically the RWPs placed behind the tube provide better performance.
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Copyright (c) 2025 Adnan Roshid Shawon, Fahim Al Galib, Mohammad Ilias Inam (Author)
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