A novel transient computational fluid dynamics-fluid–structure interaction model for the pad adaptive motion and rotordynamic coefficients of hybrid porous tilting pad bearings

IF 1.6 3区工程技术 Q3 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2024-01-22 DOI:10.1177/13506501241227708

Peng Xia, Xiaofei Jin, Wenlong Song, Yangqiao Liang, Shicheng Xu, Jiabao Liu, Zhansheng Liu, Wensheng Ma

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引用次数: 0

Abstract

Hybrid porous tilting pad bearings with the advantages of gas porous bearings and tilting pad bearings exhibited excellent rotor-supporting performance with high accuracy and stability. Under hybrid lubrication, the transient adaptive motion of the tilting pads was important for the rotordynamic characteristics. A novel fluid–structure interaction model of hybrid porous tilting pad bearings was developed to investigate the transient hydro forces and the pad's adaptive motion. The rotordynamic coefficients of the hybrid porous tilting pad bearings were identified using the rotor harmonic trajectory. The computational fluid dynamics-fluid–structure interaction model was validated with the experimental data. The effects of eccentricity ratios, rotor speeds, supply pressures, pivot radial stiffnesses, and dampings on the pad adaptive motion and the rotordynamic coefficients were evaluated. The pad self-adaption motions significantly influenced the supporting and vibration-absorbing characteristics of hybrid porous tilting pad bearings.

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用于混合多孔倾斜垫轴承的垫自适应运动和旋转动力系数的新型瞬态计算流体动力学-流体-结构相互作用模型

混合多孔斜垫轴承兼具气体多孔轴承和斜垫轴承的优点，具有优异的转子支撑性能、高精度和高稳定性。在混合润滑条件下，倾斜垫的瞬态自适应运动对旋转动力学特性非常重要。为研究瞬态水力和倾斜垫的自适应运动，建立了混合多孔倾斜垫轴承的新型流固耦合模型。利用转子谐波轨迹确定了混合多孔可倾瓦轴承的旋转动力系数。计算流体动力学-流体-结构相互作用模型与实验数据进行了验证。评估了偏心比、转子速度、供给压力、枢轴径向刚度和阻尼对衬垫自适应运动和旋转动力系数的影响。垫片自适应运动显著影响了混合多孔倾动垫轴承的支撑和吸振特性。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 工程技术-工程：机械

CiteScore

4.20

自引率

5.00%

发文量

110

审稿时长

6.1 months

期刊介绍： The Journal of Engineering Tribology publishes high-quality, peer-reviewed papers from academia and industry worldwide on the engineering science associated with tribology and its applications. "I am proud to say that I have been part of the tribology research community for almost 20 years. That community has always seemed to me to be highly active, progressive, and closely knit. The conferences are well attended and are characterised by a warmth and friendliness that transcends national boundaries. I see Part J as being an important part of that community, giving us an outlet to publish and promote our scholarly activities. I very much look forward to my term of office as editor of your Journal. I hope you will continue to submit papers, help out with reviewing, and most importantly to read and talk about the work you will find there." Professor Rob Dwyer-Joyce, Sheffield University, UK This journal is a member of the Committee on Publication Ethics (COPE).