FERROFLUID SQUEEZE FILM IN CURVED ROUGH POROUS CIRCULAR PLATES WITH SLIP VELOCITY: A COMPARISON OF MAGNETIC FLUID FLOW MODELS

This investigation presents a comparison of all the three magnetic fluid flow models (Neuringer–Rosensweig model, Shliomis model, Jenkins model) concerning the performance of a ferrofluid squeeze film in curved rough porous circular plates considering the slip velocity. The slip model of Beavers and Joseph’s has been invoked to study the effect of slip velocity. The stochastic averaging model of Christensen and Tonder has been deployed to evaluate the effect of transverse surface roughness. The pressure distribution is obtained by solving the associated stochastically averaged Reynolds type equation. The expression for load carrying capacity is obtained thereafter. The graphical representations establish that Shliomis model remains more favourable for designing the bearing system. It is also appealing to note that for lower to moderate values of slip, Neuringer–Rosensweig model may be adopted. Besides, Jenkins model may be used when the roughness is at lower level and the slip is at minimum.

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