Transient dynamic analysis and experimental verification on lubrication regime transition during startup period of non-contacting mechanical seal in liquid oxygen turbopump
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Transient dynamic analysis and experimental verification on lubrication regime transition during startup period of non-contacting mechanical seal in liquid oxygen turbopump
- 发表刊物：
- Tribology International
- 摘要：
- 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.
- 合写作者：
- Lushuai Xu, Yangyang Liu, Jiu Hui Wu, Xiaoyang Yuan, Muming Hao
- 卷号：
- Vol.176, 2022
- 页面范围：
- 107932 (18 Pages)
- 是否译文：
- 否
- 发表时间：
- 2022-09-12