ABSTRACT This study uses a parametric optimization and characteristic analysis of water‐lubricated bearings (WLB) under various design configurations and operating conditions. To characterise the performance of WLB, 31 simulation cases were designed using the Taguchi method. The study examines the impact of key design and operating parameters—specifically, attitude angle, eccentricity ratio, length‐to‐diameter ( L / D ) ratio and rotational speed (RPM)—on the resulting temperature distribution, structural deformation and stress within the bearing. The results show that increasing the eccentricity ratio improves the load‐bearing capacity, with the peak pressure rising from 500 000 Pa ( e / c = 0.5) to 4 060 000 Pa ( e / c = 0.9). Similarly, attitude angle has a significant effect on hydrodynamic pressure. The result shows that when the attitude angle goes from 20° to 60°, the maximum pressure goes from 730 000 to 1 960 000 Pa. The impact of RPM fluctuations on the temperature of the water film is apparent, with Case 21 (450 RPM) measuring 305.88 K, while Case 14 (525 RPM) attains 314.32 K, illustrating the influence of rotational speed on thermal dissipation. Furthermore, ANN‐based optimization was employed to determine the optimal design and operating parameters for achieving maximum load‐bearing capacity and minimising heat dissipation. This led to an ideal bearing pressure of 35589.14 Pa and a water film temperature of 314.32 K. This study provides valuable insights into optimising the performance of water‐lubricated journal bearings, enhancing their longevity and reliability in industrial, maritime and hydropower applications.
Kumar et al. (Mon,) studied this question.
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