Numerical analysis of mono and hybrid nanofluids-cooled micro finned heat sink for electronics cooling-(Part-I)

Adeel Arshad*, Muhammad Ikhlaq, Muhammad Saeed, Muhammad Imran

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study explores the thermohydraulic performance of metallic-oxide and carbon-additives-based mono and hybrid nanofluids-cooled micro pin-fin heat sink by adopting the multiphase Eulerian model. The circular configuration is adopted for micro pin-fins, with the staggered arrangement and constant heat flux applied at the base of the heat sink. The mono and hybrid nanofluids are based on an aqueous solution of Ag, MgO, GNP, MWCNT, Ag-MgO, and GNP-MWCNT mono and hybrid nanoparticles, and a pressure drop (Δp) range is applied across the heat sink. The heat transfer and fluid flow performance are evaluated in terms of temperature difference (ΔT), thermal resistance (Rth ) of the heat sink, average heat transfer coefficient (havg ), average Nusselt number (Nuavg ), pumping power (PP), overall performance (OP), and performance evaluation criteria (PEC), whereas the velocity, temperature, pressure coefficient, and flow streamline contours present the qualitative depiction of flow distributions across the heat sink. The results revealed that under certain Δp conditions, the GNP dispersed mono nanofluid showed the highest thermal performance of the micro pin-fin heat sink compared to the water as a coolant. The optimal nanoparticle loading (φ) is found between 0.50 % and 0.75 % of GNP nanoparticles. The maximum enhancement in PEC is achieved at 60 % for φ of 0.50 % and 0.75 % for both Δp of 1120 Pa and 1470 Pa, respectively. At an optimum Δp, the higher average havg, Nuavg , and lower Rth are achieved.
Original languageEnglish
Article number100810
Number of pages12
JournalInternational Journal of Thermofluids
Volume23
Early online date20 Aug 2024
DOIs
Publication statusPublished - Aug 2024

Bibliographical note

Crown Copyright © 2024 Published by Elsevier Ltd. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/)

Data Access Statement

The authors do not have permission to share data.

Keywords

  • Thermohydraulic performance
  • Nanofluid
  • Micro pin-fin
  • Heat sink
  • Heat and fluid flow

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