THERMAL SCIENCE

International Scientific Journal

Siti Hanani Mat Yasin

,

Muhammad Khairul Anuar Mohamed

,

Zulkhibri Ismail

,

Basuki Widodo

,

Mohd Zuki Salleh

NUMERICAL METHOD APPROACH FOR MAGNETOHYDRODYNAMIC RADIATIVE FERROFLUID FLOWS OVER A SOLID SPHERE SURFACE

ABSTRACT
In this paper, the theoretical study on the laminar boundary-layer flow of ferrofluid with influences of magnetic field and thermal radiation is investigated. The viscosity of ferrofluid flow over a solid sphere surface is examined theoretically for magnetite volume fraction by using boundary-layer equations. The governing equations are derived by applied the non-similarity transformation then solved numerically by utilizing the Keller-box method. It is found that the increments in ferro-particles (Fe3O4) volume fraction declines the fluid velocity but elevates the fluid temperature at a sphere surface. Consequently, the results showed viscosity is enhanced with the increase of the ferroparticles volume fraction and acts as a pivotal role in the distribution of velocity, temperature, reduced skin friction coefficient, and reduced Nusselt number of ferrofluid.
KEYWORDS
ferrofluid, magnetohydrodynamic, thermal radiation, solid sphere, magnetite, free convection
PAPER SUBMITTED: 2021-07-10
PAPER REVISED: 2021-07-15
PAPER ACCEPTED: 2021-07-18
PUBLISHED ONLINE: 2021-12-18
DOI REFERENCE: https://doi.org/10.2298/TSCI21S2379M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Special issue 2, PAGES [379 - 385]
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Numerical method approach for magnetohydrodynamic radiative ferrofluid flows over a solid sphere surface

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