Drag Reduction Analysis of the Hydrostatic Bearing with Surface Micro Textures

Surface microtexturing has been widely used due to its good hydrophobic or drag reduction characteristics, and become an effective method improve product performance reduce energy consumption. This paper mainly discusses the improvement of microtextures on dynamic pressure characteristics hydrostatic bearings, explores effects texture parameters carrying capacity, macroscopic wall two-plane shear force, cavity area other factors. In oil film model calculation smooth surface radial bearing under action high speed large external load, divergent wedge often a negative area, which is obviously not in line with actual situation, so cavitation effect needs be considered. The CFD analysis “gas-oil” two-phase flow was carried out by using mixture seek optimal scheme thus load capacity (LCC) force. arrangement geometric lubrication were compared analyzed. It found that local better than global texture, different arrangements can achieve rates. work presented this studies bearing. Taking force as target parameters, factors, such morphology, distribution phenomenon, are investigated through simulation experimental methods. textured expected obtain maximum minimum friction resistance. results show arranging partial streamwise at rear end diverging wedge, reduced about 15%, LCC increased 18%.