沟槽结构对水润滑轴承润滑特性影响机制  

Influence Mechanism of Groove Structure on the Lubrication Characteristics of Water-lubricated Bearings

作　　者：汪骥[1] 于鹏法 李瑞[1] 刘玉君[1] 刘晓[1] 高立 李晨龙 WANG Ji;YU Pengfa;LI Rui;LIU Yujun;LIU Xiao;GAO Li;LI Chenlong(School of Marine Engineering,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《润滑与密封》2023年第11期86-94,共9页Lubrication Engineering

基　　金：大连市科技创新基金双重项目(2018J11CY004);大连市科技创新基金项目(2019J12GX024)。

摘　　要：为了研究沟槽结构对船用水润滑轴承润滑特性的影响机制,采用有限元法,通过对简化后的椭圆形沟槽的二维模型进行流体动力学CFD分析,从迹线以及涡流等方面分析沟槽结构参数对沟槽内部流体特征的影响,得到不同状态下沟槽内部的压力轮廓,并分析沟槽结构参数对水润滑轴承摩擦因数的影响和轴承的润滑机制。结果表明:沟槽的大小影响轴承间隙内流体的流通面积,沟槽的结构特征影响沟槽内的流体黏度。研究结果可为水润滑轴承优化设计提供参考。In order to study the influence mechanism of groove structure on the lubrication characteristics of water-lu⁃bricated bearings in ships,the finite element method was adopted to carry out the CFD analysis of fluid dynamics through the 2D finite element model of the simplified elliptical groove,the influence of the structural parameters of the groove on the fluid characteristics inside the groove was analyzed in terms of traces as well as vortices,and the pressure profile inside the groove in different states was obtained.The influence of the structural parameters of the groove on the friction coefficient of the water-lubricated bearing and the lubrication mechanism of the bearing were analyzed.The results show that the size of the groove affects the circulation area of the fluid in the bearing gap,and the structural characteristics of the groove af⁃fect the viscosity of the fluid inside the groove.The research results can provide reference for the optimal design of waterlubricated bearings in ships.

关 键 词：水润滑轴承 沟槽结构 润滑特性 表面纹理 艉轴承 

分 类 号：TH133.2[机械工程—机械制造及自动化] TH117.2