Water-lubricated bearings have attracted increasing attention in the field of high-speed machine tools for their low friction due to low viscosity. However, new problems, in particular, insufficient load capacity, are on the way. To the point, groove-textured journal bearing is adopted in this study. Aiming at investigating the effects of groove texture on high speed, water-lubricated, hydrodynamic journal bearing precisely, and thoroughly, three-dimensional computational fluid dynamic analyses considering cavitation and turbulence are undertaken to assess the tribological performances of the bearing. To reduce the amount of three-dimensional modeling and meshing work, mesh deformation is presented. The numerical results are compared with experiments to verify the validity of the present models and calculation procedures. Pressure distribution, load capacity, and friction of groove-textured water-lubricated journal bearing are analyzed with respect to operating conditions and geometric parameters. Comparisons between groove-textured water-lubricated journal bearing and smooth bearing are carried out to find out the influence of groove texture. It is found that the groove texture can achieve a remarkable improvement of load capacity at a smaller eccentricity ratio and higher rotary speed. The load capacity is affected by the combined effects of groove depth, width, and length. However, generally, the friction force of water-lubricated journal bearing is slightly influenced by groove texture. Results can provide theoretical guidance for the optimal design of groove-textured water-lubricated journal bearing under different operating parameters.

水润滑轴承由于其低粘度而具有低摩擦力，因此在高速机床领域引起了越来越多的关注。但是，新的问题，特别是负载能力不足，正在出现。在这一点上，本研究采用带槽纹的轴颈轴承。为了准确，彻底地研究凹槽质地对高速，水润滑，流体动力轴颈轴承的影响，进行了考虑气蚀和湍流的三维计算流体动力学分析，以评估轴承的摩擦学性能。为了减少三维建模和网格划分的工作量，提出了网格变形。将数值结果与实验进行比较，以验证本模型和计算程序的有效性。压力分布 根据工作条件和几何参数分析了槽纹水润滑轴颈轴承的承载能力和摩擦。进行了槽纹水润滑轴颈轴承和光滑轴承的比较，以发现槽纹的影响。可以发现，在较小的偏心率和较高的转速下，凹槽结构可以显着提高负载能力。承载能力受凹槽深度，宽度和长度的综合影响。但是，通常，水润滑轴颈轴承的摩擦力会受到槽纹的影响。研究结果可为不同工作参数下槽纹水润滑轴颈轴承的优化设计提供理论指导。根据工作条件和几何参数分析了槽纹水润滑轴颈轴承的摩擦力和摩擦力。进行了槽纹水润滑轴颈轴承和光滑轴承的比较，以发现槽纹的影响。可以发现，在较小的偏心率和较高的转速下，凹槽结构可以显着提高负载能力。承载能力受凹槽深度，宽度和长度的综合影响。但是，通常，水润滑轴颈轴承的摩擦力会受到槽纹的影响。研究结果可为不同工作参数下槽纹水润滑轴颈轴承的优化设计提供理论指导。根据工作条件和几何参数分析了槽纹水润滑轴颈轴承的摩擦力和摩擦力。进行了槽纹水润滑轴颈轴承和光滑轴承的比较，以发现槽纹的影响。可以发现，在较小的偏心率和较高的转速下，凹槽结构可以显着提高负载能力。承载能力受凹槽深度，宽度和长度的综合影响。但是，通常，水润滑轴颈轴承的摩擦力会受到槽纹的影响。研究结果可为不同工作参数下槽纹水润滑轴颈轴承的优化设计提供理论指导。