Lattice Boltzmann simulation of natural convection in a square cavity with a linearly heated wall using nanofluid

Gholamreza Kefayati

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    In this paper, Lattice Boltzmann simulation of natural convection in a square cavity with a linearly heated wall which is filled by nanofluid has been investigated. The fluid in the cavity is a water-based nanofluid containing various nanoparticles such as copper (Cu), cupric oxide (CuO) or alumina (Al2O3). This studyhas been conducted for Rayleigh numbers of 103 to 105, while solid volume fraction (ϕ) varied from 0 to 16%. The effects of nanopartcles are displayed on streamlines, isotherms counters, local and average Nusselt number. Copper nanoparticle enhances heat transfer more than other nanoparticles, while the lowest heat transfer is demonstrated by alumina (Al2O3) nanoparticles. In addition, the increment of Rayleigh number causes the effect of the nanoparticles to increase.

    Original languageEnglish
    Article numberA055
    Pages (from-to)2143-2156
    Number of pages14
    JournalArabian Journal for Science and Engineering
    Volume39
    Issue number3
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Heat transfer
    • Lattice Boltzmann method
    • Linearly heated wall
    • Nanofluid
    • Natural convection

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