Results 1 to 10 of about 11,520 (296)

Analysis of the Turbulent Lubrication of a Textured Hydrodynamic Journal Bearing

Lubricants, 2023
In order to investigate the turbulent lubrication performance of a textured hydrodynamic journal bearing (THJB), a model of turbulent lubrication was established in this paper. The variations in the Reynolds number, oil film thickness, oil film pressure,
Yazhou Mao, Lilin Li, Daqing Li, Jingyang Zheng   +3 more
doaj   +1 more source

Validation of a Flow Channel to Investigate Velocity Profiles of Friction-Reducing Ship Coatings [PDF]

TransNav, 2021
Reducing friction with specialised hull coatings or air lubrication technologies has a potential reducing energy consumption and emissions in shipping.
Jonathan Weisheit, Vincent Emanuel Schneider, J.M. Serr, Nils Hagemeister, Johannes Oeffner   +4 more
doaj   +1 more source

Research Progress of Air Lubrication Drag Reduction Technology for Ships

Fluids, 2022
Air lubrication is a promising drag reduction technology for ships because it is considered to reduce the skin-friction resistance of ships by changing the energy of turbulent boundary layers.
Hai An, Haozhe Pan, Po Yang
doaj   +1 more source

Effect of radial clearance on the dynamic behavior of adjustable journal bearings in turbulent and laminar flow regimes

AIP Advances, 2023
Radial clearance critically affects journal bearing performance, specifically the lubrication performance. This study investigates the lubrication characteristics of a journal bearing with adjustable radial clearance and compares the dynamic behavior of ...
Lei Zhang, Hua Xu
doaj   +1 more source

Regional Characteristics and Control Method of the Mixing Flow Pattern for Water-Lubricated Tilting Pad Thrust Bearings

Applied Sciences, 2022
The water-lubricated tilting pad thrust bearings (WTTBs) of the reactor coolant main pump and high-power RDT operate at a large linear velocity, heavy load, and low viscosity. On the basis of the performance prediction of WTTBs in the mixing flow pattern,
Wu Ouyang, Bin Wang, Jian Huang
doaj   +1 more source

Numerical Calculation Analysis and Characteristic Research on Windage Loss of Oil-Jet Lubricated Aviation Gear Pair

International Journal of Aerospace Engineering, 2022
The VOF (volume of fluid) multiphase transient simulation model of the windage loss of the gear pair under oil-jet lubrication was carried out by using the dynamic mesh technology with the powerful parallel computing capabilities of the Super Cloud ...
Linlin Li, Sanmin Wang, Xuyang Zhang, Zhibin Li, Fei Li, Haoran Zou   +5 more
doaj   +1 more source

Self-Anti-Disturbance Control of a Hydraulic System Subjected to Variable Static Loads

Applied Sciences, 2022
A hydraulic system’s lubricating oil is subject to serialized variable static loads with performance. An improved self-turbulent flow algorithm, based on the real-time acquisition and monitoring of lubricating oil static pressure in a hydraulic system to
Xigui Wang, Jian Zhang, Yongmei Wang, Chen Li   +3 more
doaj   +1 more source

Performance of high-speed hydrodynamic sliding bearings with lubricating oils combining laminar and turbulent flows

Advances in Mechanical Engineering, 2020
High-speed hydrodynamic sliding bearings use lubricating oil that can have laminar and turbulent flow states, yet turbulent states remain relatively unstudied.
Yingjia Wang, Minshan Liu, Dongchen Qin, Zhenwei Yan   +3 more
doaj   +1 more source

Numerical Research of Dynamical Behavior in Engineering Applications by Using E–E Method

Mathematics, 2022
In this research, a general numerical setting has been developed by finite volume approaching for the Eulerian–Eulerian method under OpenFOAM to provide an efficient reference for industrial bubbly flows having various geometrical characteristics under ...
Tiecheng Wu, Yulong Li, Dapeng Jiang, Yuxin Zhang   +3 more
doaj   +1 more source

Dynamic Characteristics of High-speed Water-Lubricated Spiral Groove Thrust Bearing Based on Turbulent Cavitating Flow Lubrication Model

Chinese Journal of Mechanical Engineering, 2022
The water-lubricated bearings are usually the state of turbulent cavitating flow under high-speed conditions. And the distribution of cavitation bubbles and the interface effect between the two phases have not been included in previous studies on high ...
Xiaohui Lin, Shun Wang, Shuyun Jiang, Shaowen Zhang   +3 more
doaj   +1 more source