To Investigate the Effect of Oil Film Thickness at the Entrance of the Infinitely Long Slider Bearing Using CFD Analysis

Abstract

The oil film thickness between slider and shoe is a significant parameter and has a strong influence on the bearings performance. A CFD analysis has been carried out to find the effect of oil film thickness at the entrance of the slider using ANSYS workbench. Laminar viscous model with SIMPLE pressure-velocity coupling are used for the analysis. 2-D steady state, Navier-Stoke equations are discretized with finite volume approximations using structured grids. First the analysis has been carried out for the maximum load carrying capacity (i.e. m = 1.1889). For validation, CFD values are compared with the available analytical solution of Reynolds equation. CFD results showed good concord with the analytical values with a maximum error of 1%. After validation, the analysis has extended to four more m values such as 0.5, 1, 1.5 and 2. If bearing operate at below maximum load carrying capacity, the result shows that low load carrying capacity and high frictional losses. But for above, frictional forces reduces and blunt of the pressure profile at peak also decreases which will influence the action of extremely high load on a very small area of the shoe.

Dynamic Characteristic Analysis of the Multi-Stage Centrifugal Pump Rotor System with Uncertain Sliding Bearing Structural Parameters

“…During the optimization process, the position vector and velocity vector are updated iteratively based on the individual optimal position and the global optimal position described in Equation (12).…”

“…In the fluid simulation, the dynamic model of the bearing fluid domain was established with the aid of the fluid simulation software, and the dynamic characteristic coefficients of the sliding bearing were solved by setting the boundary conditions. Hanoca et al [12] analyzed the influence of oil film thickness on the dynamic characteristics of the sliding bearing using ANSYS Workbench software. The numerical solution of the computational fluid dynamics was compared with the numerical analysis solution of the Reynolds equation.…”

Analisis Pengaruh Inersia Terhadap Load Carrying Capacity Pada Bantalan Thrust Bertekstur Segi Empat Tunggal Dengan Mempertimbangkan Slip Menggunakan Metode Computational Fluid Dynamic (Cfd)

“…Akan tetapi apabila kedalaman tekstur terlalu besar atau terlalu kecil, load carrying capacity muatan akan menurun. Selain itu, terdapat faktor-faktor lain yang mempengaruhi load carrying capacity yaitu tekanan kavitasi, kecepatan slider dan film thickness antara slider dengan bantalan [4,5,6].…”

Implementation of micropolar fluids model and hydrodynamic behavior analysis using user-defined function in FLUENT

“…Select the lubricant parameter ρ = 922 . 5 kg / m 3 and μ = 0 . 16 Pa · s , and lubricant film is thin enough about 1 / 10 4 times to the size of bearing, thus the change of micropolar parameters will produce obvious hydrodynamic characteristics. 30,31 The micropolar parameters used in the comparison calculation are shown in Table 1; computational domain is divided into triangular mesh with a minimum element size of 0.2 mm.…”