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This paper investigates the features of applied magnetic field and entropy generation on Jeffrey nanofluid in between an annular part of two micro non-concentric pipes with the inner one being of rigid nature traveling with uniform speed. Research in nanofluid has gained much attention because of its influence on magnetic field imposed externally. Besides this, to improve the thermal conductivity, magnetic environment has also been introduced on nanofluids. They regulate the flow peculiarities as well as effect the external applied magnetic field. This contributes to the generation of magnetic nanoparticles containing drugs to the tumor portion of an organ. Moreover, the energy loss during the thermal mass transfer is a vital part of the procedure. This is related to entropy generation. In this paper, the combined effects of entropy and magnetic field are addressed. The flow pattern is first made dimensionless by using dimensionless quantities and later defined by lubrication approach. The analytical results have been evaluated and discussed with figures related to velocity profile, temperature distribution, entropy generation profile, Bejan number, Nusselt number, etc. It was observed that the magnetic field opposes the flow speed and rate of entropy generation but enhances the temperature of nanofluid. The current results are also validated through comparison with existing literature through a special case of proposed model.

Magnetized Jeffrey nanofluid with energy loss in between an annular part of two micro non-concentric pipes