Heat dissipation has become an important issue due to the miniaturization of various\nelectronic devices. Various methods such as spray and nozzle coolers, heat sinks and so on are\nused for heat dissipation. However, the emergence of ferrofluids drastically improves the operating\ncharacteristics of electromagnetic systems and devices. A ferrofluid is a suspension containing\n10-nm magnetic particles in a colloidal solution. This material exhibits paramagnetic behavior and is\nsensitive to magnetic field and temperature. In this study, heat transfer characteristics of ferrofluids\nin a rotating eccentric cylinder were investigated using the commercial code, COMSOL Multiphysics.\nNumerical results of the local Nusselt number, magnetophoretic force and velocity distributions were\nobtained from various eccentricities of the cylinder, and the results were graphically depicted with\nvarious flow conditions.
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