Research on Performance Calculation Differences of Nuclear Power Radial Sliding Bearings under Different Hypothesis Conditions
Based on the three-dimensional Navier-Stokes(NS)equations,this study compares and analyzes the performance of sliding bearings under different eccentricity conditions in cylindrical and planar configurations.The results indicate that at low eccentricity levels,there is relatively minimal difference in performance between the cylindrical and planar models.However,a significant increase in disparity is observed at higher eccentricity levels.The cylindrical model yields higher maximum pressure values and greater side leakage flow compared to the planar model.For low eccentricity,the cylindrical model demonstrates lower load capacity and friction torque compared to the planar model,while the opposite is observed at high eccentricity.Comparison between the oil film calculations on cylindrical and planar surfaces reveals that the cylindrical configuration exerts the most significant influence on maximum pressure,followed by load-bearing capacity,with relatively minor effects on torque and side leakage flow.Under high eccentricity conditions,the cylindrical surface effect within the oil film could significantly impact bearing performance,offering crucial insights for engineering design.
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