Open AccessInfluence of Roughness Parameter in Hydrodynamic Lubrication: A Special Case of Thrust Bearing
Author(s) -
Saquib Rouf,
A. H. Fazili,
Farooq Ahmad Najar,
Shafiq Ur Réhman,
S. Gulzar,
Surajit Malik,
V. Dhinakaran
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/988/1/012014
Subject(s) - reynolds equation , lubrication , bearing (navigation) , mechanics , surface finish , fluid bearing , solver , surface roughness , lubricant , materials science , reynolds number , mathematics , mechanical engineering , physics , engineering , turbulence , mathematical optimization , composite material , astronomy
Basic hydrodynamic lubrication theory has been considered in the present work. In this project, Reynolds equation in polar coordinates (r, θ) was derived from the Navier-Stokes and then it has been augmented with appropriate boundary condition and solved using a notable numerical technique namely finite difference method with a fast solver Gauss-Seidel (with relaxation factor 1.0). In the present investigation, hydrodynamic pressure generation in an oil film has been computed without the embodiment of roughness factor first and then compared with the incorporation of roughness factor between the sliding surfaces. It was behold from this study that there is a significant change in the pressure generation. So its conspicuous from the present investigation, the lubricant performance also relies on roughness factor at large. Therefore, it is the fruitful information for the designer while designing the hydrodynamic bearings irrespective of their type it is imperative to consider roughness factor suitably.