COMBINED EFFECT OF MAGNETISM AND ROUGHNESS ON A FERROFLUID SQUEEZE FILM IN POROUS TRUNCATED CONICAL PLATES: EFFECT OF VARIABLE BOUNDARY CONDITIONS

Abstract

This article aims to discuss the performance of a ferrofluid squeeze film between transversely rough porous truncated conical plates resorting to special type of boundary conditions depending on the magnetization parameter.  Invoking the stochastic averaging model of Christensen and Tonder regarding the roughness characterization, the associated stochastically averaged Reynolds type equation is solved to get the pressure distribution, in turn, which gives the load carrying capacity.  The results affirm that suitable boundary condition may help in scaling down the adverse effect of roughness to a large extent appropriately choosing the magnetization parameter.  However, in the case of negatively skewed roughness the situation remains relatively better.  It is also found that the absence of flow doesn't deter the bearing system from supporting certain amount of load, which is very much unlikely in the case of conventional lubricant based bearing system.