Thermal and Surface Roughness Effects on Performance Analysis of Slider Bearing via Petrov–Galerkin Finite Element Method

Abstract

In this study, the performance of slider bearing with impacts of temperature and roughness of surface on 1D longitudinal and transverse roughness type is investigated using the Streamline Upwind Petrov–Galerkin (SUPG)-finite element method (FEM). It is considered that the roughness is stochastic and Gaussian in random distribution. It is also considered that viscosity and density depend upon temperature. The domain’s irregularity caused by surface roughness is changed into a regular domain for numerical computation purposes. To determine the capacity of load-carrying and pressure distribution, the continuity, momentum, modified Reynolds, and energy equations are decoupled and solved by the SUPG-FEM. It can be demonstrated that in the case of the longitudinal model of nonparallel slider bearing, the load-bearing bearing capacity and drag force of friction due to the case i of the combined effects are lower than those attributable to the influence of surface roughness. Nevertheless, the thermal case’s impact on the 1D transverse type capacity of load-carrying capability and drag friction force is below that of the combined and surface roughness impact instances. The reverse is true for parallel slider bearings, however, for a 1D transverse type, the load-carrying ability is not particularly impressive.

Performance Analysis of Thermal and Surface Roughness Effect of Slider Bearings with Unsteady Fluid Film Lubricant Using Finite Element Method

“…This demonstrates the importance of taking into account inertial terms and surface roughness effects when calculating the LCCP of plane slider bearings. In addition, the maximum curve point of the pressure is noticed closer to the 11 Journal of Applied Mathematics outlet, and the pattern of the graph of pressure distribution on the plane slider bearing is in good agreement with Sinha and Adamu [18], Kumar [4], Rathish Kumar and Srinivasa Rao [5] Desu Tessema et al [22], and Naduvinamani and Angadi [24].…”

“…At an inclination of w = 0 4, T i = T p = T s = 1 0, and for surface roughness and thermal combined effect, Figure 6 displays the pressure distribution for an unsteady fluid flow lubricant of a plane slider bearing for various modified Reynolds numbers. This suggests that the current study is superior to earlier work when compared to the steady laminar flow of the pressure distribution, which is carried out in Sinha and Adamu [18] and Desu Tessema et al [22]. In comparison to other methods that are described in the literature, our method generally has a better LCCP.…”

“…Recently, Desu Tessema et al [22] and Tessema et al [23] using the streamline upwind Petrov-Galerkin (SUPG) finite element method (FEM) examined the performance of slider bearings with the effects of thermal and surface roughness on one-dimensional longitudinal and transverse roughness types under laminar and turbulent conditions. Naduvinamani and Angadi [24] examined the static and dynamic properties of a few stress fluid-lubricated rough, porous Rayleigh step bearings.…”