Abstract
An endeavour has been made to study and analyze the behaviour of a magnetic fluid-based squeeze film between curved transversely rough rotating circular plates when the curved upper plate lying along a surface determined by an exponential function approaches the curved lower plate along the surface governed by a secant function. A magnetic fluid is used as the lubricant in the presence of an external magnetic field oblique to the radial axis. The random roughness of the bearing surfaces is characterised by a stochastic random variable with nonzero mean, variance, and skewness. The associated nondimensional averaged Reynolds equation is solved with suitable boundary conditions in dimensionless form to obtain the pressure distribution, leading to the expression for the load carrying capacity. The results establish that the bearing system registers an enhanced performance as compared to that of the bearing system dealing with a conventional lubricant. This investigation proves that albeit the bearing suffers due to transverse surface roughness, there exist sufficient scopes for obtaining a relatively better performance in the case of negatively skewed roughness by properly choosing curvature parameters and the rotation ratio. It is appealing to note that the negative variance further enhances this positive effect.
Highlights
Archibald [1] presented a study on the squeeze film behaviour between various geometrical configurations of flat surfaces
In actual practice the flatness of the plate does not endure due to elastic, thermal and uneven wear effects. Taking this point into account Bhat and Deheri [13] studied the effect of a magnetic fluid lubricant on the configuration of Ajwaliya [4] by considering the two plates along the surfaces described by exponential functions
Patel and Deheri [15] observed the magnetic fluid-based squeeze film behaviour between curved circular plates lying along a surface determined by secant functions
Summary
Archibald [1] presented a study on the squeeze film behaviour between various geometrical configurations of flat surfaces. In actual practice the flatness of the plate does not endure due to elastic, thermal and uneven wear effects Taking this point into account Bhat and Deheri [13] studied the effect of a magnetic fluid lubricant on the configuration of Ajwaliya [4] by considering the two plates along the surfaces described by exponential functions. Patel and Deheri [15] observed the magnetic fluid-based squeeze film behaviour between curved circular plates lying along a surface determined by secant functions. All these investigations underlined the importance of the curvature parameter for improving the performance of bearing system. Exponential expression while the surface of the curved lower plate is governed by a secant function
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