Steady-state optimisation of a groove texture with different oil film thickness. (2015)

• Record Type: Journal Article
• Authors: Zhao, Yuncai; Yang, Fei
• Is Part Of: International journal of surface science and engineering. Volume 9:Number 5(2015)
• Page Start: 385
• Page End: 394
• Publication Date: 2015
• Subjects: lubricant film thickness -- surface groove texture -- hydrodynamic lubrication performance -- CFD -- computational fluid dynamics -- simulation -- steady-state optimisation -- oil film thickness -- Navier-Stokes equations -- groove depth -- groove width; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Surfaces (Technology) -- Periodicals; Tribology -- Periodicals; 530.417
• Languages: English
• ISSNs: 1749-785X

Abstract

The lubricant film thickness is not stable in practical applications of lubricate. This work focuses on hydrodynamic lubrication performance of surface groove texture for a non-stable oil film thickness and use a two-dimensional computational fluid dynamics (CFD) model base on the Navier-Stokes equation to discuss the relation among groove depth D, groove width W and lubricant film thickness H with a specified sliding speed. It is found that there exist optimum design parameters of surface groove texture for a non-stable oil film thickness. The parameters are characterised by groove width W and groove depth D and its values are respectively 0.5 and 0.7. In addition, the optimum value of groove depth D is strongly affected by groove width. When W varies between 0.1 and 0.8, for example, the optimum's depth D ranges from 0.5 to 1. But it has little effect of lubricant film thickness on the optimum value of groove depth.