Dimple structure has been known to act
as a lubricant reservoir, generating hydrodynamic
pressure and load-carrying capacity to help reducing
friction for sliding surface. In this paper, a threedimensional CFD analysis was done on a simplified
model resembling a piston skirt surface textured with
dimple. The influence of dimple area ratio ( !
pressure distribution in hydrodynamic lubrication was
investigated. Largest contribution can be seen for !of
8.1% by which an increase of 102% in load carrying
capacity was obtained as compared to untextured surface
with 0% area ratio.