A fluid-structure coupling numerical model of an oil-jet lubricated cylindrical roller bearing (CRB) in a high-power gearbox is developed, in which the volume of fluid (VOF) method and slip mesh model are used. The heat sources of bearing are defined as the transient thermal boundary. The differences of temperatures between the rigid and flexible bearings are compared. The simulation results are validated by the presented experimental results. It indicates that the oil flow rate, speed, waviness amplitude and order, oil viscosity and nozzle number will significantly influence the bearing’s lubricating characteristics. The flexible bearing model with the transient thermal boundary is more accurate than those of other two models. To suppression the increment of bearing temperature, the waviness should be reduced.

建立了大功率齿轮箱中喷油润滑圆柱滚子轴承（CRB）的流固耦合数值模型，其中使用了流体体积（VOF）方法和滑动网格模型。轴承的热源定义为瞬态热边界。比较了刚性轴承和柔性轴承之间的温度差异。模拟结果得到了所呈现的实验结果的验证。这表明油的流量、速度、波纹幅度和阶次、油的粘度和喷嘴数量将显着影响轴承的润滑特性。具有瞬态热边界的柔性轴承模型比其他两种模型更准确。为抑制轴承温度的升高，应减小波纹度。