Open AccessMagnetohydrodynamic Effects in Mixed Convection of Ferrofluid Flow at Lower Stagnation Point on Horizontal Circular Cylinder
Author(s) -
Siti Hanani Mat Yasin,
Mohamed Muhammad Khairul Anuar,
Zulhilmi Ismail,
Salleh Mohd Zuki
Publication year - 2021
Publication title -
journal of advanced research in fluid mechanics and thermal sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 13
ISSN - 2289-7879
DOI - 10.37934/arfmts.86.1.5263
Subject(s) - ferrofluid , magnetohydrodynamic drive , mechanics , stagnation point , magnetohydrodynamics , lorentz force , combined forced and natural convection , magnetic field , physics , cylinder , classical mechanics , heat transfer , materials science , natural convection , mathematics , geometry , quantum mechanics
In this paper, mixed convection of ferrofluid containing magnetite, Fe3O4 with ferroparticles suspended in water at the lower stagnation point on a horizontal circular cylinder is investigated. The partial differential equation which derived from the transformation of the dimensional governing equation and non-similarity transformation with the consideration of the effect of magnetohydrodynamic (MHD) are solved numerically by using Keller-box method. The influences of an external magnetic field on ferrofluid flow and heat transfer are then discussed. The results showed that the viscosity depends on the ferroparticle volume fraction and ferrofluid temperature. The uniform magnetic field that produced Lorentz force acts as a determiner of the trend of fluid movement and has the tendency to control the cooling rate of the surface.