ABSTRACT
This chapter aims to inquire and foresee the operative analytical behavior of finite hydrodynamic bearing in the turbulence regime dealing with non-Newtonian lubricants. The classical momentum and continuity equations have been utilized under turbulent and non-Newtonian flow and are figured out for steady-state characteristics. Ng and Pan’s turbulence (linear) model has been incorporated in the present work. The governing equations with appropriate coordinates embodying the lubricant flow field of a circular bearing using a Newtonian lubricant were worked out by FEM. The consequences of a non-Newtonian parameter in the viscosity terms are introduced by the hypothesis of the non-Newtonian model. In this chapter, the outcome of the combined lubrication flow regime has been established by working out with the governing equations derived simultaneously by using the linear turbulence theory along with the cubic shear stress model. Performance characteristics of a circular bearing (L/D = 1.0) have been used to compute load capacity, friction coefficient parameter, temperature rise variable, and total oil flow at particular eccentricity ratios for various Reynolds numbers and different magnitudes of nonlinearity pertaining to the non-Newtonian model. Enumerated results are well matched with the published outcomes achieved using the Ng and Pan linear turbulence theory and the non-Newtonian lubrication model of cubic shear stress. The computed results divulged better performance of a circular bearing under a severe operating environment.
