A radial thrust hydrodynamic sliding bearing (RTHSB) with special shaped cavity had been designed. Taking the instantaneous temperature rise characteristics of RTHSB as an analysis object, considering the influence of inlet lubricating oil velocity and transmission shaft speed, a dynamic simulation method of variable viscosity temperature field is proposed, and the mathematical model of instantaneous temperature rise of time-varying oil film is constructed. The correlation equation between instantaneous temperature rise and oil film variable viscosity is analyzed, the lubricating performance of a special-shaped cavity with variable thickness of the oil film considering real-time full operating conditions is revealed, and the alternating transient laws of oil film thickness with variable viscosity and its instantaneous temperature rise for no-load, heavy-load, and different rotating speeds are studied. It is obtained that the higher temperature area of profiled shaped cavity on reverse flow side extends to oil seal side with increase of rotating speed. The dynamic simulation of variable viscosity of RTHSB with different film thickness is simulated by using FLUENT software and the trend of transient film temperature field distribution of in special-shaped cavity is evaluated. The rationality of the mechanism analysis and numerical simulation results in this paper has been verified.

设计了带异型腔的径向推力水力滑动轴承（RTHSB）。以RTHSB的瞬时温升特性为分析对象，考虑进口润滑油速度和传动轴转​​速的影响，提出了变黏温场的动态仿真方法，并建立了时变瞬时温升的数学模型。制作油膜。分析了瞬时温升与油膜可变粘度之间的相关方程，揭示了考虑实时全工况的油膜厚度可变的异型腔的润滑性能，并揭示了油膜厚度的交替瞬态规律。粘度可变，空载时瞬时温度升高，研究了重载和不同的转速。结果表明，随着转速的增加，异形腔在逆流侧的高温区域延伸至油封侧。利用FLUENT软件对不同膜厚的RTHSB的可变粘度进行了动态模拟，并评估了异型腔中瞬态膜温度场分布的趋势。验证了本文机理分析和数值模拟结果的合理性。利用FLUENT软件对不同膜厚的RTHSB的可变粘度进行了动态模拟，并评估了异型腔中瞬态膜温度场分布的趋势。验证了本文机理分析和数值模拟结果的合理性。利用FLUENT软件对不同膜厚的RTHSB的可变粘度进行了动态模拟，并评估了异型腔中瞬态膜温度场分布的趋势。验证了本文机理分析和数值模拟结果的合理性。