Heat Transfer Enhancement in a Microchannel Heat Sink with Trapezoidal Cavities on the Side Walls

Navin Raja Kuppusamy; Nik Nazri Nik Ghazali; Saidur Rahman; M.A. Omar Awang; Hussein A. Mohammed

doi:10.4028/www.scientific.net/AMM.819.127

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 819Heat Transfer Enhancement in a Microchannel Heat...

Heat Transfer Enhancement in a Microchannel Heat Sink with Trapezoidal Cavities on the Side Walls

Abstract:

The present study focuses on the numerical study of thermal and flow characteristics in a microchannel heat sink with alternating trapezoidal cavities in sidewall (MTCS). The effects of flow rate and heat flux on friction factor and Nusselt are presented. The results showed considerable improvement heat transfer performance micro channel heat sink with alternating trapezoidal cavities in sidewall with an acceptable pressure drop. The heat transfer rate has improved in the cavity area due the greater fluid mixing in fluid vortices and thermal boundary layer disruption. The slipping over the reentrant cavities and pressure gain reduces pressure drop appears as the reason behind of only minor pressure drop due to the cavities.

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Periodical:

Applied Mechanics and Materials (Volume 819)

Pages:

127-131

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.819.127

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Online since:

January 2016

Authors:

Navin Raja Kuppusamy*, Nik Nazri Nik Ghazali, Saidur Rahman, M.A. Omar Awang, Hussein A. Mohammed

Keywords:

Forced Convection, Microchannel Heat Sink, Numerical Analysis, Trapezoidal Cavities

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