Results 211 to 220 of about 10,169,708 (230)

Numerical Analysis of the Effect of Geometric Variations on the Mass Flow Distribution for an Under-Race Lubrication System

Volume 1: Aircraft Engine
Abstract Operating conditions of modern aero-engines place a significant demand on oil for the lubrication and cooling of roller bearings. The supply of the required lubricant is often achieved by a system consisting of an oil jet targeted onto a feed geometry machined into the shaft.
Hans-Jörg Bauer
exaly   +3 more sources

Research on Internal Two-Phase Flow in the Local Micro-Clearance Design of a High-Speed Ball Bearing With Under-Race Lubrication

Lubrication Science
AbstractIn this research, an angular contact ball bearing with two‐half inner rings is used as a carrier. Considering the two‐phase flow characteristics of oil and air in the bearing, the flow characteristics of lubricating oil inside the bearing with under‐race lubrication are studied.
Zhengang Liu, Ping Gong
exaly   +2 more sources

Sensitivity Analysis and Optimization on Oil Capture Performance of Under-Race Lubrication System for High-Speed Bearings

Tribology International
Zhengang Liu, Le Jiang, Yaguo Lyu
exaly   +2 more sources

Numerical Prediction of Drag Force on Spherical Elements Inside High-Speed Ball Bearing With Under-Race Lubrication

Mechanical Systems and Signal Processing
Wenjun Gao, Yuanhao Li
exaly   +2 more sources

The Performance of a Hybrid Ceramic Ball Bearing Under High Speed Conditions with the Under-Race Lubrication Method

Tribology Transactions, 1997
Large bore (150 mm) hybrid ceramic ball bearings and all-M50 steel bearings were tested with under-race lubrication to compare the heat generation and the temperature rise at speeds up to 2.25 million DN. Furthermore, oil shut-off tests were carried out with both bearings over 2.25 million DN.
Y. Shoda, S. Ijuin, H. Aramaki, H. Yui, K. Toma   +4 more
openaire   +1 more source

Numerical and experimental investigation on two-phase flow and oil capture efficiency of under-race lubrication for high-speed bearings

Physics of Fluids
The increasing rotational speed and temperature levels in modern aeroengines impose higher demands on the lubrication and cooling design of the roller bearings supporting the main shaft. To design a compact and efficient under-race lubrication system, a comprehensive understanding of the characteristics of oil–air two-phase flow and the variations in ...
Le Jiang, Zhenxia Liu, Weina Huang, Yaguo Lyu, Yanjun Li, Yankun Hou, Yewei Liu   +6 more
openaire   +1 more source

Influence and optimization of dual-orifice jet nozzles on oil capture performance of under-race lubrication with a radial oil scoop for high-speed bearings in aero-engine

Physics of Fluids
The objective of this research is to determine the influence of dual-orifice jet nozzles on the oil–air flow dynamics and oil capture performance in the under-race lubrication for high-speed bearings and to identify the optimal design parameter combinations for optimizing the oil capture performance.
Le Jiang, Zhenxia Liu, Weina Huang, Yaguo Lyu, Yanjun Li, Wenjun Gao, Yewei Liu   +6 more
openaire   +1 more source

On heat, temperature, and cavity oil volume fraction of an under-race lubricated angular contact ball bearing

Tribology International, 2023
Donghyun Kim, Myungho Kim, Gyongwon Ryu, Jisu Park   +3 more
openaire   +1 more source

Review for "Analysis of temperature field and convection heat transfer of oil-air two-phase flow for ball bearing with under-race lubrication"

2021
  +4 more sources

Numerical Investigation of the Oil–Air Distribution Inside Ball Bearings With Under-Race Lubrication

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2022
Zhengang Liu, Le Jiang, Wenjun Gao
exaly