Abstract
A numerical analysis was carried out to study the effect of the different pin fin layout in the microchannel heat sink. Three-Dimensional numerical analysis was carried out using the conjugate heat transfer module of COMSOL MULTIPHYSICS software. Initially, a microchannel heat sink with elliptical pin fins of 500 μm fin height was analysed and the results were validated with the results from the literature. Further, four microchannels with different pin fin layouts were investigated in terms of heat transfer coefficient and pressure drop. The analysis was done for the different angle between the major axis of the ellipse of pin fin and fluid flow direction. Then the analysis was done for the different axial distance between pin fins. It was observed from this study, that the variation in axial distance between fin pins is a better way to enhances the thermal performance of a microchannel heat sink compared to the change in the angle between the major axis of the ellipse to the fluid flow direction.
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Abbreviations
- Dc :
-
Hydraulic diameter of the channel (4Ac/Pc)
- h:
-
Heat transfer coefficient (W/m2 K)
- K:
-
Thermal conductivity (W/m K)
- q″:
-
Heat flux (W/m2)
- Re:
-
Reynolds number
- Tb:
-
Fluid bulk temperature (K)
- Tnw:
-
Near wall temperature (K)
- u:
-
Average axial velocity (m/s)
- μ:
-
Dynamic viscosity
- ρ:
-
Density (kg/m3)
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Jadhav, S.V., Pawar, P.M., Shinde, A.B., Wangikar, S.S. (2020). Performance Analysis of Elliptical Pin Fins in the Microchannels. In: Pawar, P., Ronge, B., Balasubramaniam, R., Vibhute, A., Apte, S. (eds) Techno-Societal 2018 . Springer, Cham. https://doi.org/10.1007/978-3-030-16962-6_30
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DOI: https://doi.org/10.1007/978-3-030-16962-6_30
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