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Thermal performance of metallic nanofluids in microchannel heat sink

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posted on 2022-03-28, 02:42 authored by Duncan Clark
A numerical investigation of the heat transfer enhancement of a two-dimensional microchannel heat sink (MCHS) using Al2O3-water, CuO-water and TiO2-water was conducted. The numerical methodology uses mathematical models for continuity, momentum, energy and solid temperature to model the fluid flow through the MCHS. The effect of the metallic nanoparticles on the thermal performance of the heat transfer fluid (HTF) in the heat sink was examined for the volume concentrations of 1%, 3% and 5%. Techniques for increasing the thermal performance of HTF are to raise the thermal conductivity of the fluid and/or to reduce the viscosity. Analysis of the effect the individual thermo-physical properties have on the thermal boundary layer and the total thermal performance is conducted. The results depict that for Al2O3-water and Cuo-waternanofluids the overall thermal performance is increased compared to the pure base fluid of water, with the most effective volume concentrations at 5% and 3%. TiO2-water nanofluid decreased in thermal perfomance at all volume concentrations. Overall, Al2O3-water nanofluid at the volume concentration of 5% shows the most effective heat transfer capabilities in the MCHS.


Table of Contents

1. Introduction -- 2. Literature review -- 3. Mathematical models -- 4. Simulation model -- 5. Verification -- 6. Impact of density and heat capacity on thermal performance -- 7. Impact of viscosity on thermal performance -- 8. Impact of thermal conductivity on fluid flow -- 9. Results -- 10. Abbreviations -- Appendix -- Bibliography.


Bibliography: pages 51-53 Empirical thesis.

Awarding Institution

Macquarie University

Degree Type

Thesis bachelor honours


BSc (Hons), Macquarie University, Faculty of Science and Engineering, School of Engineering

Department, Centre or School

School of Engineering

Year of Award


Principal Supervisor

Ann Lee


Copyright Duncan Clark 2017. Copyright disclaimer:




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