The effect of liner surface texture on journal bearing performance under thermo-hydrodynamic conditions
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 14 February 2020
Issue publication date: 6 April 2020
Abstract
Purpose
The purpose of this paper is to study the effect of liner surface texture on journal bearing performance. Modeling the profile curvature of the dimples or grooves is planned for different cases of texture surface under thermo-hydrodynamic condition (THD). The aim of this paper is to determine the effect the texture surface on the performance of journal bearing and specify the optimum shape for texture dimples.
Design/methodology/approach
The paper was opted for an exploratory study by applying finite difference method to solve the energy equation, the heat conduction equations and the Reynolds equation numerically. The lubricant film thickness is divided to a mesh of 640,000 points. The equations were solved for each point of the mesh by using a MATLAB code. For texture shape optimization, 24 cases of different texture shapes were selected which includes elliptical, triangle and square curvature shape.
Findings
The paper provides theoretical insights about the effect of texture shape on journal bearing performance. It was concluded that to get a high load-carrying capacity, the direction of curvature is preferably to be perpendicular to the sliding direction. The convex texture has higher load carrying capacity than concave texture. Finally, the surface with textures in channel form yields better overall performance than the surface with several dimples.
Originality/value
This paper fulfils an identified need to study how texture surface affects the performance of journal bearing under thermo-hydrodynamic conditions.
Keywords
Citation
Saleh, A.M., Crosby, W., El Fahham, I.M. and Elhadary, M. (2020), "The effect of liner surface texture on journal bearing performance under thermo-hydrodynamic conditions", Industrial Lubrication and Tribology, Vol. 72 No. 3, pp. 405-414. https://doi.org/10.1108/ILT-06-2019-0239
Publisher
:Emerald Publishing Limited
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