Jet Impingement Cooling of a Microchannel Heat Sink with Microgroove

N.Y. Cheung; Kok Cheong

doi:10.37934/cfdl.15.12.107116

Authors

N.Y. Cheung Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, 43500, Malaysia
Kok Cheong Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, 43500, Malaysia

DOI:

https://doi.org/10.37934/cfdl.15.12.107116

Keywords:

Jet impingement, microchannel heat sink, groove, cooling performance

Abstract

The present study works on opportunities in improving the design of micro-channel heatsink (MCHS). The present study focuses on investigating numerically the effects of adding grooves at the MCHS which subject to jet impingement cooling. Commercial software ANSYS Fluent is used and realizable k-epsilon model is adopted to conduct a parametric study on the width and depth of rectangular longitudinal grooves at a constant heat flux of 250 W/cm2 applied at the base of MCHS. Two type of channel designs with grooves i.e. center-groove and side-groove were created and investigated numerically. Results show that addition of grooves generally give improvements in cooling performance and reducing the pressure drop. Some designs of side-grooved channels and center-grooved channels improve the temperature uniformity. The size of the groove affects the flow within the grooves and therefore affect the cooling performance.

Author Biography

Kok Cheong, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia, 43500, Malaysia

kok-cheong.wong@nottingham.edu.my

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