Lattice Boltzmann simulation of turbulent natural convection in a square cavity using Cu/water nanofluid

h Sajjadi, B Abbasi, Gholamreza Kefayati

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)

    Abstract

    In this paper, lattice Boltzmann simulation of turbulent natural convection with large-eddy simulations (LES) in a square cavity which is filled by water/copper nanofluid has been investigated. The present results are validated by experimental data at Ra = 1.58×109. This study is conducted for high Rayleigh numbers (Ra = 107-109) and volume fractions of nanoparticles (0 ≤ Φ ≤ 0.06). In this research, the effects of nanoparticles are displayed on streamlines and isotherms counters, local and average Nusselt numbers. The average Nusselt number is enhanced by the augmentation of nanoparticle volume fraction in the base fluid while the manner has an erratic trend toward different Rayleigh numbers.

    Original languageEnglish
    Pages (from-to)2341-2349
    Number of pages9
    JournalJournal of Mechanical Science and Technology
    Volume27
    Issue number8
    DOIs
    Publication statusPublished - Aug 2013

    Keywords

    • Heat transfer
    • Lattice Boltzmann method
    • Nanofluid
    • Natural convection
    • Turbulence

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