Modeling the hydraulic-thermal performance of a sinusoidal semi-porous channel with nanofluid flow and applying a magnetic field

Authors

1 PhD graduate, Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran

2 Associate Professor, Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran

10.22044/jsfm.2024.14036.3828

Abstract

In this study, the hydraulic-thermal performance of a semi-porous wave channel with nanofluid flow and applied magnetic field has been evaluated. The magnetic field is perpendicular to the channel. In this design, single-phase, incompressible and permanent nanofluid flow is considered. The ranges of Hartmann number and Darcy number are 0 ≤ Ha ≤ 10 and 10-5 ≤ Da ≤ 10-2, respectively. Magnesium oxide nanoparticles have been investigated in four different volume fractions (0, 2, 4 and 5%). The governing equations are solved by the finite volume method. Based on the obtained results, increasing the volume fraction of nanoparticles and channel wave improves heat transfer. At constant Reynolds number, increasing the number of wave channels from 4 to 6 resulted in a 7.8% decrease in thermal hydraulics. The increase in permeability in the porous medium has increased the Nusselt number and reduced friction. The best thermal hydraulic performance is 10.08 at Darcy number 0.01 and the lowest is 0.52 at Darcy number 0.0001. Also, the presence of magnetic field has a positive effect on thermal performance. The results of this study can be useful in the design of heat exchangers.

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Main Subjects

References

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Journal of Solid and Fluid Mechanics
Volume 14, Issue 3
September and October 2024
Pages 107-123

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