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Numerical Investigation of Magnetic Field Effect on Mixed Convection Heat Transfer of Nanofluid in a Channel with Sinusoidal Walls

Abstract : In this study, mixed convection heat transfer of nano-fluid flow in vertical channel with sinusoidal walls under magnetic field effect is investigated numerically. The heat transfer and hydrodynamic characteristics have been examined. This study has performed for 500≤qRe≤q1000, 5\texttimes104≤qGr≤q1\texttimes106 , three amplitude sine wave (0.1, 0.2 and 0.3) and three values of Hartman numbers (0, 5 and 10). Water was utilized as the base fluid and Al2O3 is the considered nano-particle. Flow is assumed two dimensional, laminar, steady and incompressible. As well the thermo-physical properties of nano-fluid are considered constant. The Boussinesq approximation used for calculated the density variations. The average Nusslet number increases by increasing the Grashof number for nano-fluids with different volume fraction. The average Nusselt and Poiseuille number increase as Reynolds number increases. Also, the average Nusselt number and Poiseuille number increases by increasing the Hartman number.
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https://hal-univ-paris10.archives-ouvertes.fr/hal-01473752
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Submitted on : Wednesday, February 22, 2017 - 11:15:02 AM
Last modification on : Tuesday, November 19, 2019 - 9:46:27 AM

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Mohammad Mehdi Rashidi, Mohammad Nasiri, Marzieh Khezerloo, Najib Laraqi. Numerical Investigation of Magnetic Field Effect on Mixed Convection Heat Transfer of Nanofluid in a Channel with Sinusoidal Walls. Journal of Magnetism and Magnetic Materials, Elsevier, 2016, 401, pp.159-168. ⟨10.1016/j.jmmm.2015.10.034⟩. ⟨hal-01473752⟩

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