摘要
针对机油滤清器工作工况下进出口压差、机油滤层强度及导流桩高度等问题,通过试验测试与仿真相结合,对滤清器初步设计进行了评估及优化,以确保滤清器在工作工况下进出口压降及滤层强度能满足要求.首先进行滤层性能试验,得到滤层的惯性阻力系数和黏性阻力系数;再通过滤层多孔介质CFD分析,对滤清器进出口压降进行分析计算.结果表明:在-18℃、25℃和70℃的工况下,进出口压降都小于10 kPa,满足相关要求.针对滤层的最大主应力超过其抗拉强度的问题,通过CAE仿真分析,优化滤层与导流桩间隙,将滤层最大主应力由110.1 MPa降至36.99 MPa,小于其抗拉强度42.8 MPa.
Aiming at the problems concerning pressure difference between inlet and outlet,strength of oil filter layer and diversion pile height under the working condition of oil filter,the preliminary design of filter is evaluated and optimized by the combination of experiment and simulation,so that the pressure drop of inlet and outlet and the strength of filter layer are ensured to meet the requirements.First,the filter layer performance test is performed to obtain the inertial resistance coefficient and the viscous resistance coefficient of the filter layer.Then the pressure drop at the inlet and outlet of the filter is analyzed and calculated by CFD(Computational Fluid Dynamics)analysis of the porous media of the filter layer.The results show that,under three working conditions of-18℃,25℃and 70℃,the inlet and outlet pressure drop is always less than 10 k Pa,which meets the requirements.In view of the problem that the maximum principal stress of the filter layer exceeds its tensile strength,CAE simulation analysis is used to optimize the gap between the filter layer and the diversion piles,making the maximum principal stress of the filter layer being reduced from 110.1 MPa to 36.99 MPa,which is less than its tensile strength of 42.8 MPa.
作者
刘攀勇
陈振雷
商晴
柳超杰
林枝强
LIU Panyong;CHEN Zhenlei;SHANG Qing;LIU Chaojie;LIN Zhiqiang(Faculty of Maritime and Transportation,Ningbo University,Ningbo 315832,China)
出处
《宁波大学学报（理工版）》
CAS
2021年第1期45-49,共5页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
国家自然科学基金(11972203)
宁波大学人才工程项目(理)。
关键词
滤清器
滤层
黏性阻力系数
惯性阻力系数
强度分析
filter
filter layer
viscous drag coefficient
inertial drag coefficient
stress analysis
