Results 1 to 10 of about 23,891 (308)

Study the Foundation Effect on the Hydrodynamic Bearing Performance. [PDF]

open access: yesKirkuk Journal of Science, 2019
The hydrodynamic bearings are important components of most of the rotary parts in different applications. The current study examines the performance of the traditional type, which is the most common because they are easy to the manufactured, relatively ...
Ibrahem Muhsin, Hawazen Shubat
doaj   +1 more source

An Experimental Investigation of Hydrodynamic Journal Bearing with Different Oil Grades [PDF]

open access: yesPort Said Engineering Research Journal, 2019
Journal bearings are known to be intrinsic components in different marine applications. They are regarded as the most instrumental means by which large loads could be transmitted at mean speed of rotation.
Nour Marey
doaj   +1 more source

Analysis for Hydrodynamic Wedge-Platform Thrust Slider Bearing with Ultralow Surface Separation

open access: yesInternational Journal of Rotating Machinery, 2022
For the case of ultralow surface separation, in a hydrodynamic wedge-platform thrust slider bearing, the outlet zone and a portion of the inlet zone are in boundary lubrication, while most of the inlet zone is in the multiscale lubrication contributed by
Chao Wang, Yongbin Zhang
doaj   +1 more source

Stability Analysis of Rotor-Bearing Systems under the Influence of Misalignment and Parameter Uncertainty

open access: yesApplied Sciences, 2021
Stability is a well-known challenge for rotating systems supported by hydrodynamic bearings (HDBs), particularly for the condition where the misalignment effect and the parametric uncertainty are considered.
Xiaodong Sun   +2 more
doaj   +1 more source

Fluid-solid coupled simulation on thermal management of hydrodynamic gas foil bearing with an axial cooling throughflow

open access: yesCase Studies in Thermal Engineering, 2022
The axial throughflow cooling is a realistic solution for the purpose of thermal management in the hydrodynamic gas foil bearings operating at ultra-high rotational speed and mini bearing clearance. In order to illustrate the effects of axial throughflow
Qi-hong Gao   +3 more
doaj   +1 more source

A comparative study of structural parameters for spiral groove bearing in centrifugal rotary blood pump

open access: yesHeliyon, 2023
In this work, the hydrodynamic characteristics of spiral groove bearing in centrifugal rotary blood pump is investigated for the cases with different structural parameters.
Cong Xue, Yu Chen, Bin Zhu, Xiuying Wang
doaj   +1 more source

Run-Up Simulation of a Semi-Floating Ring Supported Turbocharger Rotor Considering Thrust Bearing and Mass-Conserving Cavitation

open access: yesLubricants, 2021
The vibration behaviour of turbocharger rotors is influenced by the acting loads as well as by the type and arrangement of the hydrodynamic bearings and their operating condition.
Christian Ziese   +4 more
doaj   +1 more source

Multiscale Analysis of Hydrodynamic Step Bearing with Ultra Low Surface Separations [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The paper presents the multiscale analysis for the hydrodynamic step bearing with ultra low surface clearances where only the physical adsorbed layer is present in the outlet zone and the continuum fluid flow mainly occurs in the inlet zone. This bearing
C. Cao, Y. Zhang
doaj   +1 more source

Proposal of a High Rigidity and High Speed Rotating Mechanism Using a New Concept Hydrodynamic Bearing in X-Ray Tube for High Speed Computed Tomography

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2009
In this paper, a high rigidity and high speed rotating mechanism using a new concept hydrodynamic bearing in X-ray tube for high speed computed tomography is proposed.
Hitoshi HATTORI   +5 more
doaj   +1 more source

A New THL Model for High Accuracy of Predicted Journal Surface Temperature

open access: yesTribology Online, 2020
A thermo-hydrodynamic lubrication (THL) theory is applied to journal bearings that support large-sized high-speed rotary machineries and it is confirmed that the maximum pad surface temperature under operation is below an allowable limit value.
Kiyoshi Hatakenaka   +2 more
doaj   +1 more source

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