Analytical and experimental study on the bi-misaligned lubrication characteristics of a novel grooved bearing

Lubrication states of water-lubricated grooved bearing are unclear, revised models considering bi-misaligned status and turbulent effect are established. Effects of bi-misaligned status on the internal fluid dynamics and how they further act on lubrication characteristics are thoroughly analyzed. Influences of velocity, external load, clearance ratio and groove number on key parameters under different misaligned conditions are probed. Bi-misalignment leads to uneven increase of film thickness and pressure. It affects the interface lubrication effect and operation stability. When the number of grooves is 5, the multiple dynamic parameters reach extreme values. This study provides valuable references for the understanding of bi-misaligned status on the lubrication characteristics for such grooved bearings.