This paper tries to display complete thermo-hydrodynamic research in journal bearings, investigating the growing pressure and temperature rise inside the bearing during operation. The narrow and infinitely long bearings are extensively investigated including analytical solutions either for plain journal bearing, or journal bearing with an axial groove. In narrow bearing approximation, the temperature distribution inside the bearing is also demonstrated. As concerns the finite bearing, it is simulated using the Computational Fluid Dynamis (CFD) algorithm. It is worth noting that the heating effects that are included in this simulation assuming variable viscosity, as well as the bearing, are examined both with industrial lubricants and environmentally friendly oils. One of the most major findings is that, concerning the AWS-100, results in higher temperature values in all examined cases and a more variable temperature distribution at the oil film-bush interface, especially under the assumption of adiabatic bearing. Furthermore, the use of ISO VG 32 leads to a more uniform temperature distribution in the circumferential direction at the film-bush interface.

本文试图显示对轴颈轴承的完整热流体动力学研究，以研究轴承在运行过程中不断增长的压力和温升。对窄而无限长的轴承进行了广泛的研究，包括用于滑动轴承或带有轴向槽的滑动轴承的分析解决方案。在狭窄的轴承近似值下，还显示了轴承内部的温度分布。关于有限轴承，它是使用计算流体动力学（CFD）算法进行模拟的。值得一提的是，使用工业润滑剂和环境友好型油料，对假设粘度可变的模拟以及轴承中的热效应进行了检验。最主要的发现之一是，关于AWS-100，导致在所有检查的情况下都有较高的温度值，并且油膜-衬套界面处的温度分布变化更大，尤其是在绝热轴承的情况下。此外，使用ISO VG 32会导致薄膜与喷头界面在圆周方向上的温度分布更加均匀。