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

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.

Publication DOI: https://doi.org/10.1016/j.ijft.2024.100810
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
College of Engineering & Physical Sciences
Funding Information: This research is facilitated by the Faculty of Environment, Science and Economy, University of Exeter, United Kingdom and Department of Mechanical, Biomedical and Design Engineering, Aston University, Birmingham, United Kingdom research infrastructures.
Additional Information: 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/)
Uncontrolled Keywords: Thermohydraulic performance,Nanofluid,Micro pin-fin,Heat sink,Heat and fluid flow
Publication ISSN: 2666-2027
Data Access Statement: The authors do not have permission to share data.
Last Modified: 03 Oct 2024 17:25
Date Deposited: 28 Aug 2024 17:44
Full Text Link:
Related URLs: https://www.sci ... 666202724002519 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2024-08
Published Online Date: 2024-08-20
Accepted Date: 2024-08-01
Authors: Arshad, Adeel
Ikhlaq, Muhammad
Saeed, Muhammad
Imran, Muhammad (ORCID Profile 0000-0002-3057-1301)

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