Revathi Gadamsetty, Venkata Subrahmanyam Sajja, P. Sudam Sekhar, Dhaneshwar Prasad

Frontiers in Heat and Mass Transfer (FHMT) 16 - 7 (2021)

An attempt has been made to investigate hydrodynamic lubrication characteristics of  asymmetric roller bearings lubricated by thin fluid film under the operating behavior of line contact for a heavily loaded rigid system for normal squeezing motion with cavitation points. The lubricant follows non-Newtonian incompressible Bingham plastic fluid model where the fluid viscosity is supposed to vary with hydrodynamic pressure. The equations which govern the fluid flow such as continuity and momentum equation are solved first analytically and later numerically using MATLAB. The numerical results are achieved for the velocity, pressure, load, and traction forces by varying different physical parameters like rolling ratio, squeezing parameter, and yield stress parameter. The obtained results are investigated numerically and graphically. Finally, it is concluded that a notable change is observed in velocity, pressure, load and traction with Newtonian and non-Newtonian fluids. Results follow good agreement with the available literature.