Details
| Original language | English |
|---|---|
| Article number | 104601 |
| Number of pages | 12 |
| Journal | Journal of tribology |
| Volume | 146 |
| Issue number | 10 |
| Early online date | 6 Jun 2024 |
| Publication status | Published - Oct 2024 |
Abstract
Previous research has revealed that introducing a secondary lubricating medium can temporarily enhance water-lubricated bearing performance, thereby reducing the risk of lubrication failure under challenging conditions. This study aims to identify the optimal injection point for the secondary lubricating medium and evaluates oil supply rate effects. Experiments are conducted using a block-on-ring test rig, complemented by computational fluid dynamics (CFD) simulations to elucidate the underlying mechanisms. Three oil supply settings, upstream, inlet and outlet of the contact region, are compared. Results show that upstream oil supply led to a lower critical speed at which the added oil loses any effect compared to the inlet oil supply and outlet oil supply. The effect of oil supply rates on friction reduction varies among the oil supply settings and ring rotational speeds. In conclusion, the most effective oil supply setting positions the injector at the outlet of the contact region, outperforming placement at the entrance of the contact region.
Keywords
- CFD simulation, hydrodynamic lubrication, journal bearings, lubricants, mixed lubrication, oil supply rate, oil supply setting, secondary lubricating medium, viscosity, water lubrication
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of tribology, Vol. 146, No. 10, 104601, 10.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Impact of Oil Supply Conditions on Water Lubrication Assisted With Minimal Secondary Lubricating Medium
AU - Ji, Hao
AU - Yu, Tao
AU - Zhang, Xiaohan
AU - Guo, Feng
AU - Liang, Peng
AU - Poll, Gerhard
N1 - Publisher Copyright: Copyright © 2024 by ASME.
PY - 2024/10
Y1 - 2024/10
N2 - Previous research has revealed that introducing a secondary lubricating medium can temporarily enhance water-lubricated bearing performance, thereby reducing the risk of lubrication failure under challenging conditions. This study aims to identify the optimal injection point for the secondary lubricating medium and evaluates oil supply rate effects. Experiments are conducted using a block-on-ring test rig, complemented by computational fluid dynamics (CFD) simulations to elucidate the underlying mechanisms. Three oil supply settings, upstream, inlet and outlet of the contact region, are compared. Results show that upstream oil supply led to a lower critical speed at which the added oil loses any effect compared to the inlet oil supply and outlet oil supply. The effect of oil supply rates on friction reduction varies among the oil supply settings and ring rotational speeds. In conclusion, the most effective oil supply setting positions the injector at the outlet of the contact region, outperforming placement at the entrance of the contact region.
AB - Previous research has revealed that introducing a secondary lubricating medium can temporarily enhance water-lubricated bearing performance, thereby reducing the risk of lubrication failure under challenging conditions. This study aims to identify the optimal injection point for the secondary lubricating medium and evaluates oil supply rate effects. Experiments are conducted using a block-on-ring test rig, complemented by computational fluid dynamics (CFD) simulations to elucidate the underlying mechanisms. Three oil supply settings, upstream, inlet and outlet of the contact region, are compared. Results show that upstream oil supply led to a lower critical speed at which the added oil loses any effect compared to the inlet oil supply and outlet oil supply. The effect of oil supply rates on friction reduction varies among the oil supply settings and ring rotational speeds. In conclusion, the most effective oil supply setting positions the injector at the outlet of the contact region, outperforming placement at the entrance of the contact region.
KW - CFD simulation
KW - hydrodynamic lubrication
KW - journal bearings
KW - lubricants
KW - mixed lubrication
KW - oil supply rate
KW - oil supply setting
KW - secondary lubricating medium
KW - viscosity
KW - water lubrication
UR - http://www.scopus.com/inward/record.url?scp=85195541822&partnerID=8YFLogxK
U2 - 10.1115/1.4065495
DO - 10.1115/1.4065495
M3 - Article
AN - SCOPUS:85195541822
VL - 146
JO - Journal of tribology
JF - Journal of tribology
SN - 0742-4787
IS - 10
M1 - 104601
ER -