This theoretical study investigated the effect of thermophysical properties on Nusselt number when magnetic field and thermal radiation are exposed to ferrofluid flow at lower stagnation point a hot sphere surface. The thermo-physical important mechanisms considered in heat transfer process. Besides, ferroparticles volume fraction is one variables that can enhance exclusively studied conductivi...

Abstract In this paper the focus is on thermal and electrical design aspects of a NbTi-based demonstrator magnet for magnetic density separation (MDS) that being constructed at University Twente. MDS recycling technology allows non-magnetic particles based their mass density, using vertical field gradient ferrofluid. To minimize distance between planar array racetrack coils ferrofluid bath, sys...

In this article, electromagnet layouts are presented, which generate a magnetic field with magnitude gradient that does not vary significantly in horizontal plane but decreases monotonically the vertical height above magnet. Such one-direction is specific requirement for density separation (MDS), novel recycling technology combines ferrofluid to separate mixture of non-magnetic materials based ...

This study develops analytical relationships and computations of power dissipation in magnetic fluid (ferrofluid) subjected to alternating magnetic field. The dissipation results from the orientational relaxation of particles having thermal fluctuations in a viscous medium. r 2002 Elsevier Science B.V. All rights reserved.