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This paper presents numerical investigation of water-Fe3O4 ferrofluid flowing over a heated circular cylinder located between parallel walls and the effect of
applying non-uniform axial magnetic field on the hydro-thermal behavior of the
flow is investigated using two phase mixture model and control volume technique.
The obtained results shows that the appeared vortices behind the cylinder due to
flow over the cylinder are influenced by the applied non uniform magnetic field
and they can be weakened or get completely suppressed by the applied magnetic
field. Applying the magnetic field also enhances the local heat transfer coefficient
and the local friction factor over the heated cylinder wall considerably.
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