Operating characteristics of supercritical carbon dioxide high speed tilting pad bearings considering inertia effect

Advances in Mechanical Engineering

卷:15

Research Article

Shuxiang Yi¹  Sheng Chen¹  Weimin Yuan¹ 

[1] Xiaojing Wang, School of Mechatronic Engineering and Automation, Shanghai University, No. 333 Nan Chen Road, Baoshan District, Shanghai 200444, China. Email:

[2] School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, China

关键词: Supercritical carbon dioxide;    tilting pad bearing;    inertia effect;    turbulent lubrication;   

DOI  :  10.1177/16878132231170785

 received in 2023-01-17, accepted in 2023-04-03,  发布年份 2023

来源: Sage Journals

【 摘 要 】

Some degree of inertia effect on the bearing film is inevitable for high density supercritical carbon dioxide (S-CO2) working as a lubricant in high speed rotor operating conditions. This paper aims to reveal the influence of inertia effect on static and dynamic performances of the S-CO2 tilting pad bearings. Numerical results demonstrate that inertia effect on the lubricating film of the top pad is more pronounced. The peak pressure of all pads is increased at a high reduced Reynolds number compared with the inertialess condition, while the influence of inertia effect on the dynamic coefficient is weak. The theoretical model including inertia effect presented in this study can more accurately evaluate the performance of high speed S-CO2 tilting pad bearings.

【 授权许可】

CC BY   
© The Author(s) 2023