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Journal of Thermal Science

, Volume 14, Issue 4, pp 362–367 | Cite as

Heat transfer and fluid flow of nanofluids in laminar radial flow cooling systems

  • Gilles Roy
  • Samy Joseph Palm
  • Cong Tam Nguyen
Article

Abstract

Nanofluids are considered as interesting alternatives to conventional coolants. It is well known that traditional fluids have limited heat transfer capabilities when compared to common metals. It is therefore quite conceivable that a small amount of extremely fine metallic particles placed in suspension in traditional fluids will considerably increase their heat transfer performances. A numerical investigation into the heat transfer enhancement capabilities of coolants with suspended metallic nanoparticles inside a radial, laminar flow cooling configuration is presented. Temperature dependant nanofluid properties are evaluated from experimental data available in recent literature. Results indicate that considerable heat transfer increases are possible with the use of relatively small volume fractions of nanoparticles. Generally, however, these are accompanied by considerable increases in wall shear-stress. Results also show that predictions obtained with temperature variable nanofluid properties yield greater heat transfer capabilities and lower wall shear stresses when compared to predictions using constant properties.

Keywords

nanofluids nanoparticles heat transfer laminar flow confined radial flow 

CLC number

TK 124 

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Copyright information

© Science Press 2005

Authors and Affiliations

  • Gilles Roy
    • 1
  • Samy Joseph Palm
    • 1
  • Cong Tam Nguyen
    • 1
  1. 1.Faculty of EngineeringUniversité de MonctonMonctonCanada

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