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Examining of nanofluid natural convection heat transfer in a Γ-shaped enclosure including a rectangular hot obstacle using the lattice Boltzmann method

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  • Mohebbi, Rasul
  • Izadi, Mohsen
  • Sajjadi, Hasan
  • Delouei, Amin Amiri
  • Sheremet, Mikhail A.

Abstract

The present investigation is set to evaluate the nanofluid thermogravitational convection within a Γ-shaped enclosure that consists of a local heater by the lattice Boltzmann method (LBM). In this study the Rayleigh number (103–106), cavity’s aspect ratio (0.2–0.6), nanofluid solid volume fraction (0–0.05), height and location of the heater on the liquid circulation and heat transfer parameters examined with respect to the Γ-shaped enclosure. The study is innovated in nature as it combines the nanofluid and the hot obstacle within the same Γ-shaped enclosure. The results of the conducted analyses indicate that the mean Nusselt number would increase as the Rayleigh number and nanoparticles concentration increased. This resulted in a reduction in the enclosure aspect ratio and increment in the obstacle’s height. The thermal transmission rate is highly affected by the obstacle’s position. Also, it is found that, when the heater is situated on the left border, the mean Nusselt number would be maximized.

Suggested Citation

  • Mohebbi, Rasul & Izadi, Mohsen & Sajjadi, Hasan & Delouei, Amin Amiri & Sheremet, Mikhail A., 2019. "Examining of nanofluid natural convection heat transfer in a Γ-shaped enclosure including a rectangular hot obstacle using the lattice Boltzmann method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 526(C).
    • Handle: RePEc:eee:phsmap:v:526:y:2019:i:c:s0378437119304133
    DOI: 10.1016/j.physa.2019.04.067
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    Citations

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    Cited by:

    1. Afrouzi, Hamid Hassanzadeh & Hosseini, Mirolah & Toghraie, Davood & Mehryaar, Ehsan & Afrand, Masoud, 2020. "Thermo-hydraulic characteristics investigation of nanofluid heat transfer in a microchannel with super hydrophobic surfaces under non-uniform magnetic field using Incompressible Preconditioned Lattice," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 553(C).
    2. Selimefendigil, Fatih & Öztop, Hakan F., 2020. "Effects of conductive curved partition and magnetic field on natural convection and entropy generation in an inclined cavity filled with nanofluid," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 540(C).
    3. Jiale Fu & Tiechen Zhang & Menghan Li & Su Li & Xianglin Zhong & Xiaori Liu, 2019. "Study on Flow and Heat Transfer Characteristics of Porous Media in Engine Particulate Filters Based on Lattice Boltzmann Method," Energies, MDPI, vol. 12(17), pages 1-29, August.
    4. Sarafraz, M.M. & Tlili, I. & Tian, Zhe & Bakouri, Mohsen & Safaei, Mohammad Reza, 2019. "Smart optimization of a thermosyphon heat pipe for an evacuated tube solar collector using response surface methodology (RSM)," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 534(C).
    5. Khan, Arif Ullah & Saleem, S. & Nadeem, S. & Alderremy, A.A., 2020. "Analysis of unsteady non-axisymmetric Homann stagnation point flow of nanofluid and possible existence of multiple solutions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 554(C).
    6. Goutam Saha & Ahmed A.Y. Al-Waaly & Manosh C. Paul & Suvash C. Saha, 2023. "Heat Transfer in Cavities: Configurative Systematic Review," Energies, MDPI, vol. 16(5), pages 1-53, February.

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