离散化
箔法
多重网格法
雷诺方程
机械
润滑
材料科学
流体轴承
箔片轴承
结构工程
控制理论(社会学)
计算机科学
数学
偏微分方程
雷诺数
工程类
数学分析
物理
复合材料
人工智能
湍流
控制(管理)
作者
Kefan Xu,Guanghui Zhang,Jiazhen Han,Qianqian Wang,Huang Yongsheng,Weizhi Gong,Yang Guo,Zhe Li,Wenlong Sun
出处
期刊:Surface topography
[IOP Publishing]
日期:2023-10-09
卷期号:11 (4): 045001-045001
标识
DOI:10.1088/2051-672x/acfd45
摘要
Abstract Surface texturing is an excellent solution to the load capacity deficiency of foil journal bearings. However, it will also introduce significant discretization efforts. This paper explored the possibility of searching the static balance locus of textured foil journal bearing using the multigrid method to ensure design efficiency. The modified Reynolds equation characterized the ultra-thin gas film behavior inside bump-type foil bearing, and two foil models were adopted simultaneously to obtain the foil’s structural deflection. The predicted load capacity agreed well with the experimental data. The results indicate that multigrid can accelerate the solution process of the compressible pressure governing equation, and the speed can be increased up to 70% when the nonlinear discretization scheme is adopted. It is recommended that textures are located in the pressure-rising region along the shaft’s rotating direction and that the axial direction is fully textured to improve load capacity. Moreover, the above texture distribution scheme can increase the tolerable maximum misalignment angle by 11.8% and enhance the stability of rotors operated in light-load and high-speed cases.
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