摘要
为将非结构化网格技术应用于滑动轴承的油膜压力分析,提出将格点型有限体积法应用于雷诺方程的求解,采用形函数导数的方法计算压力梯度,采用多重网格法求解方程组,进而得到轴承的液膜压力分布。通过与相关算例的对比和分析,验证了格点型有限体积法的适用性、精度及对非结构化网格的适应性,并对不同网格类型下的计算时间进行了对比,随后将该算法应用于内燃机主轴承油膜压力的求解,结果表明,增大偏心率会导致油膜压力会逐渐增大,而增大倾斜角会对油膜压力分布产生较明显影响。
In order to apply the unstructured grid technique to analyze oil film pressure in journal bearings,the cell-vertex finite volume method(CVFVM)was proposed here to solve Reynolds equations.The shape function derivative was used to calculate pressure gradient,the multi-network method was used to solve equation set,and obtain a journal bearing’s oil film pressure distribution.Through comparison and analysis of corresponding examples,the applicability,accuracy and adaptability to the unstructured grid of CVFVM were verified,and the computing time for different grid types was compared.Finally,this proposed method was used to solve the oil film pressure distribution of an internal combustion engine’s main bearing.The results showed that increase in eccentricity can cause oil film pressure to gradually rise,while increase in inclination angle can obviously affect oil film pressure distribution.
作者
杨国栋
曹贻鹏
明平剑
张文平
李燎原
YANG Guodong;CAO Yipeng;MING Pingjian;ZHANG Wenping;LI Liaoyuan(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;China Ship Development and Design Center,Wuhan 430064,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2019年第17期191-196,219,共7页
Journal of Vibration and Shock
基金
国家自然科学基金项目(50909023)
船舶水下辐射噪声测试与设计评估关键技术研究
关键词
格点型有限体积法
滑动轴承
油膜压力
非结构化网格
cell-vertex finite volume method
journal bearing
oil film pressure
unstructured grid
