Abstract：Six water lubricated bearings with different clearance were designed to solve lubricating pro blems in high pressure pumps for seawater desalination. The models were built by three dimensional software Pro/E.Based on k-ε two equation turbulence model and SIMPLE algorithm, the interior flow field in different bearings clearances and the same bearing clearance at different eccentric distances were numerically simulated and analysed with Fluent software. The relationship of dynamic pressure distribution, bearing capacity, stiffness and bearing clearance were obtained. Simulation results show that the perfor mance of water lubricated bearing is the best at the clearance of 0.2 mm. Simulation results can predict the characteristics of water lubricated bearings， and provide the reference for optimization design and safe operation for high pressure pump.
[1]Baumgarten S. Hydraulic comparison of high pressure pumps for RO desalination systems[J]. World Pumps，2005(463):52-55.[2]叶晓琰，杨孙圣，许建强,等. 基于CFD技术的高压泵液力端优化设计[J]. 排灌机械，2008,26(6)：31-35.Ye Xiaoyan,Yang Sunsheng, Xu Jianqiang ,et al. Optimization design for hydraulic end of high pressure pump[J].Drainage and Irrigation Machinery, 2008,26(6): 31-35.(in Chinese)[3]Hua Xijin, Wang Jiaxu, Zhu Juanjuan,et al. Study on tribological behavior of water lubricated bearings[J]. Joural of Advanced Manufacturing Systems，2008，7(1)：115-121.[4]Guo Zenglin, Hirano T, Kirk R G. Application of CFD analysis for rotating machinery Part I: hydrodynamic, hydrostatic bearings and squeeze film damper[J]. Journal of Engineering for Gas Turbines and Power, 2005,127(2): 445-451.[5]Yu Hao, Kivilathti J. CFD modelling of the flow field inside a reflow oven[J]. Soldering and Surface Mount Technology, 2002,14(1):38-44.[6]Nabhan M b W, Ibrahim G A, Anabtawi M Z. Analysis of hydrodynamic journal bearings lubricated with a binary water based lubricant[J]. Wear, 1997,209(1/2): 13-20.[7]陶海坤，祝宝山，曹树良，等．钟形进水流道吸水室后壁的优化设计[J]. 江苏大学学报：自然科学版,2007，28（3）：228-231.Tao Haikun, Zhu Baoshan, Cao Shuliang, et al. Optimization design for back wall shape of bell like inlet passage in mixed flow pump[J]. Journal of Jiangsu University: Natural Science Edition, 2007,28(3): 228-231.(in Chinese)[8]陆林广，伍 杰，陈阿萍，等. 立式轴流泵装置的三维湍流流动数值模拟[J]. 排灌机械，2007，25（1）：29-32.Lu Linguang, Wu Jie, Chen Aping, et al. Numerical simulation of 3D turbulent flow in a vertical axial flow pump system[J]. Drainage and Irrigation Machinery, 2007,25 (1):29-32.(in Chinese)[9]杨敏官, 高波, 贾卫东, 等. 熔盐泵轴承冷却及润滑系统的分析[J]. 江苏大学学报:自然科学版, 2005,26(2): 149-152.Yang Minguan, Gao Bo, Jia Weidong, et al. Analysis of cooling and lubricating system of bearings in pumps for melted salts[J]. Journal of Jiangsu University: Natural Science Edition, 2005,26(2): 149-152.(in Chinese)[10]余江波. 基于资源节约与环境友好的高性能水润滑轴承关键技术研究[D]. 重庆：重庆大学机械工程学院，2006.
