Magnetohydrodynamics (MHD) Flow And Heat Transfer Of A Doubly Stratified Nanofluid Using Cattaneo-Christov Model

Khashi’ie, Najiyah Safwa and Md Arifin, Norihan and Hafidzuddin, Ezad Hafidz and Wahi, Nadihah and Ilias, Mohd Rijal (2019) Magnetohydrodynamics (MHD) Flow And Heat Transfer Of A Doubly Stratified Nanofluid Using Cattaneo-Christov Model. Universal Journal of Mechanical Engineering, 7 (4). pp. 206-214. ISSN 2332-3361

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Abstract

The present study utilized Cattaneo-Christov heat flux model for solving nanofluid flow and heat transfer towards a vertical stretching sheet with the presence of magnetic field and double stratification. Thermal and solutal buoyancy forces are also examined to deal with the double stratification effects. Buongiorno’s model of nanofluid is used to incorporate the effects of Brownian motion and thermophoresis. The boundary layer with non-Fourier energy equations are reduced into a system of nonlinear ordinary (similarity) differential equations using suitable transformations and then numerically solved using bvp4c solver in MATLAB software. The local Nusselt and Sherwood numbers of few limited cases are tabulated and compared with the earlier published works. It showed that a positive agreement was found with the previous study and thus, validated the present method. Numerical solutions are graphically demonstrated for several parameters namely magnetic, thermal relaxation, stratifications (thermal and solutal), thermophoresis and Brownian motion on the velocity, temperature and nanoparticles volume fraction profiles. An upsurge of the heat transfer rate was observed with the imposition of the thermal relaxation parameter (Cattaneo-Christov model) whereas the accretion of thermal and solutal stratification parameters reduced the temperature and nanoparticles concentration profiles, respectively.

Item Type:	Article
Uncontrolled Keywords:	Nanofluid, Stretching sheet, Cattaneo-christov model, Double stratification, Magnetohydrodynamics (MHD) Flow, Heat Transfer
Divisions:	Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User:	Sabariah Ismail
Date Deposited:	23 Oct 2020 11:13
Last Modified:	23 Oct 2020 11:13
URI:	http://eprints.utem.edu.my/id/eprint/24334
Statistic Details:	View Download Statistic

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