Convective heat transfer in a vertical rectangular duct filled with a nanofluid

J. C. Umavathi, I. Chung Liu, M. A. Sheremet

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An analysis is performed to study natural convective heat transfer in a vertical rectangular duct filled with a nanofluid. One of the vertical walls of the duct is cooled by a constant temperature, while the other wall is heated by a constant temperature. The other two sides of the duct are thermally insulated. The transport equations for a Newtonian fluid are solved numerically with a finite volume method of second-order accuracy. The influence of pertinent parameters such as Grashof number, Brinkman number, aspect ratio and solid volume fraction on the heat transfer characteristics of natural convection is studied. Results for the volumetric flow rate and skin friction for Copper and Diamond nanoparticles are also drawn. The Nusselt number for various types of nanoparticle such as silver, copper, diamond and titanium oxide are also tabulated. The results indicate that inclusion of nanoparticles into pure water improves its heat transfer performance; however, there is an optimum solid volume fraction which maximizes the heat transfer rate.

Original languageEnglish
JournalHeat Transfer - Asian Research
DOIs
Publication statusAccepted/In press - 2015

Fingerprint

convective heat transfer
ducts
Ducts
heat transfer
Heat transfer
nanoparticles
Diamond
Brinkman number
Nanoparticles
diamonds
silver oxides
Copper
Diamonds
Volume fraction
Grashof number
skin friction
Newtonian fluids
finite volume method
copper oxides
Nusselt number

Keywords

  • Finite volume method
  • Nanofluid
  • Rectangular duct
  • Viscous dissipation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Convective heat transfer in a vertical rectangular duct filled with a nanofluid. / Umavathi, J. C.; Liu, I. Chung; Sheremet, M. A.

In: Heat Transfer - Asian Research, 2015.

Research output: Contribution to journalArticle

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