Numerical Study of the Effect of Interrupted Fins on the Effectiveness of Cross-Flow Heat Exchanger

Hassene Djemel; Mounir Baccar; Mohamed Mseddi

doi:10.15866/ireme.v7i6.3892

Numerical Study of the Effect of Interrupted Fins on the Effectiveness of Cross-Flow Heat Exchanger

Hassene Djemel^(1*), Mounir Baccar⁽²⁾, Mohamed Mseddi⁽³⁾

^(*) Corresponding author

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Abstract

This research work presents a three-dimensional numerical study of the thermal and hydrodynamic behavior in the turbulent flow of the cross-flow heat exchanger named intercooler. Two 3-D intercooler models are performed in the calculations. Indeed, while the first one is formed by continuous fins, the second is formed by offset strip fins. The geometric configuration as well as the mesh of the computational domain are developed using commercial "Gambit 2.4.6" software. On the other hand, the ANSYS-Fluent 6.3.26 code is used to compute the velocity and temperature fields. Compared to the continuous fin configuration, the numerical simulation shows that the increase in the heat transfer in the offset strip fin configuration is higher. This proves that the excellent performance of this offset strip fin and the efficiency of intercooler have been augmented with about 20 %. The performances of the heat exchanger using numerical simulation are compared with those produced by the NTU method (Number of Transfer Units) and found to be in good agreement.
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Keywords

Heat Exchanger; Intercooler; Numerical Model; k−ε Model; Turbulent Flow

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