Effect of magnetophoresis and Brownian diffusion on mechanical processes in magnetic fluids: The role of a condensation phase transition

Abstract In this work, we study theoretically the effect of the mass transfer processes on the volume magnetic force and viscous friction of the magnetic fluid subjected to a magnetic field gradient and a shear flow between two rotating cylinders. The model is based on the diffusion equations and takes into account a condensation phase transition in the magnetic fluid. The results of experimental and theoretical studies of the diffusion processes in a thin layer of the magnetic fluid are also presented.