Computational analysis of journal bearing operating under lubricant containing Al2O3 and ZnO nanoparticles

Abstract

In this paper, the mathematical model developed for relationship between viscosity and temperature for the lubricant SAE 15W40 multi grade engine oil with Al 2 O 3 and ZnO nanoparticles is presented. The developed mathematical model for viscosity and temperature of lubricant containing nanoparticles is used for the computation of static performance characteristics of the bearing. These performance characteristics mainly depend on the viscosity of the lubricant. The addition of nanoparticles on commercially available lubricant considerably enhances the viscosity of lubricant and in turn changes the performance characteristics. To obtain pressure and temperature distribution, modified Reynolds and energy equations are used, and these equations are solved by using Finite Element Method. An iterative procedure is used to establish the film extent. The performance characteristics are calculated from the obtained pressure field. The computed results show that addition of nanoparticles increase the viscosity of lubricant and in turn change the performance characteristics of journal bearing.

Nano-fluid lubrication of single-layered porous hydrostatic bearing: a theoretical approach

“…1. The scientific explanation of such a bearing framework requires a few suspicions [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]26] of the porous layer and hydrodynamic nano-oil film. These are given underneath.…”

“…The nanoparticles added (like CuO, TiO 2 , Ag and Cu) on to the base lube oil, brings about an expansion in fluid stiffness, damping ratio, and mass coefficient. Patel et al [17] explored the presentation of illustrative permeable slider bearing under hydromagnetic lubrication. The magnetization impact of the said lubricant indicated a noteworthy improvement in the consistent state qualities of this bearing.…”

Influence of Nano-Fluid Lubrication On Single Porous-Layered Journal Bearing: A Hypothetical Approach

“…The magnetisation effect of the said lubricant showed a significant improvement in the steady-state characteristics of this bearing. Babu et al [19] evaluated a nondimensional modified Reynolds equation in case of plain journal bearing under nano-lubricant, which contains aluminium and zinc oxide nanoparticles. Due to that the viscosity index of nanolubricant is increased.…”

Effects of Nanoparticle Enhanced Lubricant Films in Thermal Design of Plain Journal Bearings at High Reynolds Numbers

“…Their studies showed that titanium oxide nanoparticles have a significant effect on improving the lubricant's load-bearing capacity. Babu et al presented the analysis of lubricated journal bearings including aluminum oxide and zinc oxide nanoparticles [25]. Their results showed that increasing the amount of nanoparticles increases the viscosity of the lubricant, thereby changing the performance characteristics of the journal bearing.…”