Forced convection heat transfer of Ag–MgO/water micropolar hybrid nanofluid inside a stairway channel

Hanif Heidari, Rasul Mohebbi and Amir Kazemi
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Hanif Heidari: School of Mathematics and Computer Science, Damghan University, Damghan 36716-41167, Iran
Rasul Mohebbi: ��School of Engineering, Damghan University, Damghan 36716-41167, Iran
Amir Kazemi: ��School of Engineering, Damghan University, Damghan 36716-41167, Iran

International Journal of Modern Physics C (IJMPC), 2021, vol. 32, issue 11, 1-16

Abstract: In this paper, the forced convection heat transfer of Ag–MgO/water hybrid micropolar nanofluid in a channel is studied numerically which the top wall of channel is smooth and bottom of it is in stairway form. The lattice Boltzmann method (LBM) is used for solving the fluid flow and heat transfer equations. The effects of Reynolds numbers (Re=100–400), volume fraction of nanofluid (ϕ=0, 0.01 and 0.02) and stairway aspect ratio (a∕H=0.1, 0.2 and 0.3) on the velocity, temperature and local and average Nusselt number profiles are investigated. The results show that by incrementing the Reynolds number and solid volume fraction and decreasing the a/H simultaneously, the average Nusselt number increases.

Keywords: LBM; stairway channel; hybrid nanofluid; forced convection (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0129183121501473

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