Investigation of Microflow Effects in Textures on Hydrodynamic Performance of Journal Bearings Using CFD Simulations

Adequately designed and positioned surface textures are recognized as a promising way to increase load-carrying capacity reduce frictional losses of journal bearings. The aim this work is analyze the local lubrication mechanisms in bearings from microflow perspective, while considering interactions between film formation whole bearing. For purpose, hydrodynamic models textured built. results show that placing downstream high-pressure region leads reduced friction force, with less severe loss capacity. effects on include positive micro-hydrodynamic pressure effect negative caused by discontinuity region. can be generated one hand limiting drop (cavitation) divergent gap other inertia effect. friction, vortex inside affects force influencing maximum shear stress at minimum oil film. In turn influenced bearing research provides fundamental reference theoretical basis for design optimization