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Inertia Effects in Rheodynamic Lubrication of an Externally Pressurized Converging Thrust Bearing using Herschel-Bulkley Fluids.
Author(s): G. Alexander Raymand, I. Jayakaran Amalraj
Keywords: Rheodynamic Lubrication, Externally Pressurized Thrust Bearing, Herschel-Bulkley lubricants, Angle of convergence, Inertia effects.
In this present study, the performance of externally pressurized converging thrust bearing lubricated with Herschel-Bulkley fluid have been analyzed by taking into consideration fluid inertia forces. This investigation will be useful in designing the bearings for the optimum performance in the extreme industrial conditions like high-speed operations, heavy load, high stiffness etc,. To avoid complex calculation, the inertia term in the momentum equation is estimated by the mean value averaged across the film thickness. By considering externally pressurized flow through narrow clearance between two convergent disks symmetry with respect to r and z axis and using appropriate boundary conditions we have numerically computed thickness of the core, velocity profile, film pressure and their by the load carrying capacity of the bearing for various values of Herschel-Bulkley number (N), Reynolds number (Re) and Angle of convergence (f). The results obtained in this study found to be in well agreement with the results of of Jayakaran et. al., (Jayakaran et. al., 2012), (Amalraj et. al., 2012) and Alexander Raymand & Jayakaran Amalraj (Alexander Raymand et. al., 2019) for a particular case.