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Keywords
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Backward facing-step, blood flow, non-uniform magnetic field, ferrofluid, mixture model
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Abstract
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In this paper, the results of adding nanoparticles and applying non-uniform magnetic fields on a biofluid (blood) flow
through a two-dimensional horizontal channel with a step are reported. Two magnetic fields with positive and negative
gradients were applied. The control volume technique and two-phase mixture model in the numerical approach have
been used to illustrate the hydro-thermal behavior of flow. Simulation results reveal that nanoparticles can significantly
increase the Nusselt number and wall shear stress. Also, the wall shear stress, Nu, and recirculation length in the
presence of a magnetic field with different gradients can be externally controlled. Based on the results, the negative
gradient magnetic field increases wall shear stress and Nu in the affected region, unlike the positive gradient.
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