Magnetohydrodynamics flow and heat transfer of Cu-water nanofluid through a partially porous wavy channel

Hamid Reza Ashorynejad, Ahad Zarghami

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Abstract

In this paper, the lattice Boltzmann method is applied to investigate the effects of uniform vertical magnetic field on thermo-hydrodynamics of nanofluid in a partially porous channel. Cu-water nanofluid with constant pressure gradient is forced to flow into the channel while the top wall is heated by constant heat flux and bottom wavy wall of the channel is insulated against heat. The porous media is modeled using the Brinkman–Forchheimer model. Good agreements with the previous results verify that the selected numerical method is a capable method for simulating magnetic fluids in a porous media. The effects of active parameters, i.e. solid volume fraction of nanoparticles, pressure gradient, magnetic field and permeability of the porous layer, on thermo-hydrodynamics of flow are examined. The results reveal that the Nusselt number is an increasing function of nanoparticle volume fraction, Hartmann number, pressure gradient and Darcy number, although the effect of Darcy numbers and pressure gradient on the temperature profile are more noticeable than others.

Original languageEnglish
Pages (from-to)247-258
JournalInternational Journal of Heat and Mass Transfer
Volume119
DOIs
Publication statusPublished - 2018

Keywords

  • Heat transfer
  • LBM
  • MHD
  • Nanofluid
  • Porous media
  • Wavy channel

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