Author
B.V.A. Rao
Bio: B.V.A. Rao is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Non-Newtonian fluid & Shear thinning. The author has an hindex of 7, co-authored 9 publications receiving 173 citations.
Papers
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TL;DR: In this paper, a modified form of Reynolds' equation was derived for steady finite width journal bearings, and the finite difference technique with successive over relaxation was used incorporating Reynolds' boundary conditions for pressure to obtain the pressure distribution and hence the attitude angle.
50 citations
TL;DR: In this paper, a modified form of Reynolds' equation for journal bearings is derived for dynamically loaded finite width journal bearings, and the stability limit for such a bearing is obtained for different values of the nonlinear factor.
38 citations
TL;DR: In this paper, the effect of the non-Newtonian behaviour of lubricants, resulting from the addition of polymers, on the performance of hydrodynamic journal bearings was investigated.
26 citations
TL;DR: In this article, the effect of non-Newtonian oil (shear thinning) on the lubrication of a piston ring is theoretically investigated and a variation of shear strain rate with shear stress that is cubic in form is used to obtain a modified form of the Reynolds equation (dynamic) applicable to a run-in ring profile which is considered to be a double parabola with a central straight portion.
21 citations
TL;DR: In this paper, a modified form of Reynolds' equation (nonlinear) is derived under conventional hydrodynamic lubrication approximations under correlation effect for pseudoplastic (shear thinning) lubricants.
Abstract: Starting from the general shear stress-shear strain relation of the odd cubic polynomial type considering correlation effect for pseudoplastic (shear thinning) lubricant, a modified form of Reynolds’ equation (nonlinear) is derived under conventional hydrodynamic lubrication approximations. The finite difference technique with successive over relaxation is used adopting the solution of the associated linear equation as a first approximation to obtain the pressure distribution of a finite cylindrical journal bearing incorporating Reynolds’ boundary conditions. Steady state performance characteristics such as load capacity, attitude, friction and flow rate are obtained for various values of nonlinear parameter and bearing slenderness ratio. The results presented in nondimensional form are compared with established results for Newtonian lubricants. The investigation shows a significant effect of correlation on the bearing load capacity and flow rate.
15 citations
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TL;DR: In this paper, the performance characteristics of a hydrodynamically lubricated journal bearing with a Bingham fluid are derived by means of three-dimensional computational fluid dynamics (3-D CFD) analysis.
210 citations
TL;DR: In this article, a comparative study between textured surface and non-textured surface non-recessed hybrid journal bearing configurations is presented, and numerically simulated results show that the textured non-regressed journal bearing provides improved stability parameter than that of journal bearing with nontexturing.
66 citations
TL;DR: In this article, the stochastic behavior of hydrodynamic journal bearings is investigated by solving the Reynolds equation with random parameters numerically based on finite difference method, and the steady state and dynamic characteristics are quantified considering random variabilities in eccentricity and surface roughness.
56 citations
39 citations
TL;DR: In this article, the authors present adiabatic solutions for a finite width hydrodynamic journal bearing with non-newtonian lubricants, obeying the power-law model.
38 citations