Investigation of the Flow Characteristics of Titanium - Oxide - Water Nanofluid in Microchannel with Circular Cross Section

Saleh Etaig, Reaz Hasan, Noel Perera

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The presented paper reports the analysis of the flows characteristic of TiO2-water nanofluid flowing inside a horizontal microchannel with circular cross section area. The flow is investigated by CFD techniques using a finite volume method. A recently introduced viscosity correlation was used to model the effective viscosity of the nanofluid. A range of Re number is tested in the present study. Various temperature ranges were used as constant temperature boundary conditions. The increase of the nanoparticle volume fraction was found to increase the heat transfer rate; water showed less enhancement in heat transfer compared to the nanofluid. The increase in Re number promoted Nu number. The effect of the temperature on the effective viscosity in the channel was also reported. The change of the velocity in the entrance region was studied and discussed. The velocity gradient in the microchannel is calculated, and the results are shown and discussed.
    Original languageEnglish
    Pages (from-to)102-109
    Number of pages8
    JournalAmerican Journal of Nano Research and Applications
    Volume5
    Issue number6
    DOIs
    Publication statusPublished (VoR) - 22 Dec 2017

    Keywords

    • Nanofluid
    • Convection
    • Viscosity and Microchannel

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