Effect of Reynolds number on pressure behavior of slider contact with triangular dimple considering slip

Abstract

One of the engine components used to reduce friction between two rotating machine elements is the bearing. Currently, studies on the provision of surface roughness on the bearing surface are being conducted to improve its performance. Simplification of surface roughness texture is modeled with various dimple shapes. There is still a paucity of literature dealing with the Reynolds equation in the context of slip and cavitation. This work proposes to utilize numerical analysis to examine the pressure induced by differences in the shape of the dimple. The dimple is portrayed as a triangle with two distinct forms. When approaching the present reality, cavitation is taken into account. Lubricating fluid enters through the dimple on the inlet side and departs through the outlet channel. Slippage is also a factor in computational fluid dynamics simulation. The pressure behavior is determined by varying the Reynolds number. The results show that the higher the Reynolds number, the more pressure is generated. The pressure produced by the triangular dimple shape with high sides at the outlet is greater than the pressure formed by the high-textured dimple at the inlet. The slippage has an impact of 17% on pressure enhancement.