Numerical Simulation of Heat Transfer in GraduallyVarying Microchannel Heat Sink

Jyoti Pandey, Mohd Zahid Ansari*, Afzal Husain

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


Microchannel heat sink has broad relevance in microelectronics and optical devices. Study in this paper focuses on enhancing the cooling characteristics of microchannel heat sink used in such devices. Instead of conventional, rectangular or circular cross-section channel designs, this study uses microchannels with gradually varying cross-section along the length. Three channels geometries employing entirely diverging or converging designs as well as combined diverging-diverging design are studied. The cooling performance is ascertained by using nanofluid and DI water as coolants flowing at different Reynolds numbers by analysing thermal characteristics such as temperature variation and Nusselt number using commercial software ANSYS® Fluent. Study demonstrates that the nanofluid is more efficient for the heat sink application irrespective of the channel geometry.

Original languageEnglish
Article number012069
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - Dec 12 2019
Event2nd International Conference on Computational and Experimental Methods in Mechanical Engineering, ICCEMME 2019 - Greater Noida, Uttar Pradesh, India
Duration: May 3 2019May 5 2019

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering


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