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Performance Analysis of Elliptical Pin Fins in the Microchannels

  • Subhash V. JadhavEmail author
  • Prashant M. Pawar
  • Anil B. Shinde
  • Sandeep S. Wangikar
Conference paper

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.

Keywords

Microchannel heat sink Numerical analysis Heat transfer coefficient Pressure drop Pin fin layout 

Nomenclature

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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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Subhash V. Jadhav
    • 1
    Email author
  • Prashant M. Pawar
    • 1
  • Anil B. Shinde
    • 1
  • Sandeep S. Wangikar
    • 1
  1. 1.SVERI’s College of EngineeringPandharpurIndia

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