Papers
Release Time: 2025-04-30Hits:
- Date:2025-04-30
- Title of Paper:Transient dynamic analysis and experimental verification on lubrication regime transition during startup period of non-contacting mechanical seal in liquid oxygen turbopump
- Journal:Tribology International
- Summary:The transition process of lubrication regime during startup period of liquid oxygen lubricated seal is investigated.
A comprehensive numerical model is proposed, which includes asperity contact, transient micro-clearance flow
as well as dynamic motion with axial vibration and angular misalignment. The influence of structural and
operational parameters on separation capacity is compared. Meanwhile, the transient response under a strong
vibration environment is analyzed. An experimental verification combined with various sensors is designed to
monitor film formation. Results show that leakage has obvious oscillation with high-frequency and lowamplitude when face separation. Excessive frequency or amplitude in a vibration environment may cause
intermittent contact. Evidently different characteristics of acoustic emission signals are observed corresponding
to various lubrication regimes during startup and shutdown. - Co-author:Lushuai Xu, Yangyang Liu, Jiu Hui Wu, Xiaoyang Yuan, Muming Hao
- Volume:Vol.176, 2022
- Page Number:107932 (18 Pages)
- Translation or Not:No
- Date of Publication:2022-09-12
