Journal ArticleDOI
Development and validation of a gaseous cavitation model for hydrodynamic lubrication
Yin Song,Chun-wei Gu,Xiao Ren +2 more
- Vol. 229, Iss: 10, pp 1227-1238
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TLDR
In this paper, a numerical model for the gaseous cavitation in hydrodynamic lubrication problems is derived based on the cavitation mechanism and origination, which is different from the conventional cavitation conditions.Abstract:
The prediction of cavitation in lubricants is of significance to the design and analysis of hydrodynamic bearings. In this paper, a numerical model for the gaseous cavitation in hydrodynamic lubrication problems is derived based on the cavitation mechanism and origination, which is different from the conventional cavitation conditions. The proposed gaseous cavitation model is then used to calculate the performance of several types of bearings, including a two-axially grooved plain journal bearing, a misaligned journal bearing and parallel thrust bearings with surface textures. The results are validated with experimental data and numerical results calculated by the Half-Sommerfeld, Reynolds, and JFO conditions. The advantage of this new model lies in its accuracy and its independence from the cavitation pressure, which is usually difficult to be accurately defined. Thus this gaseous cavitation model can be useful in the accurate prediction of the cavitation phenomenon and performance of hydrodynamic bearin...read more
Citations
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Journal ArticleDOI
Numerical Investigation of Air–Oil–Thermal Coupling Mechanism in Floating Ring Bearings
Journal ArticleDOI
Numerical Investigation of Turbulence Models for a Superlaminar Journal Bearing
TL;DR: In this article, a simulation of superlaminar oil flow in an oil-lubricated tilting-pad journal bearing is analyzed through computational fluid dynamics (CFD), and the results from the laminar model and 14 turbulence models are compared with experimental findings.
Journal ArticleDOI
Soft EHL Simulations of Lubricant Film Thickness in Textured Hard-on-Soft Bearings Considering Different Cavitation Models, in the Context of Prosthetic Hip Implants
Quentin Allen,Bart Raeymaekers +1 more
TL;DR: In this article, the authors used soft elasto-hydrodynamic simulations to calculate the lubricant film thickness in textured hard-on-soft parallel slider bearings and compared a mass-conserving cavitation model based on the Elrod implementation of the Jakobsson, Floberg, and Olsson (JFO) theory to simplified Reynolds and half-Sommerfeld cavitation models.
Journal ArticleDOI
Power loss reduction for tilt pad journal bearings utilizing pad pockets and steps
Jongin Yang,Alan Palazzolo +1 more
TL;DR: In this paper, the authors presented a novel power loss reduction technique, inserting a pocket and step in the TPJB bearing to activate cavitation in the pocket while maintaining pad stability.
References
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Journal ArticleDOI
The Dynamics of Cavitation Bubbles
TL;DR: In this paper, three regimes of liquid flow over a body are defined, namely: (a) noncavitating flow, (b) cavitating flow with a relatively small number of cavitation bubbles in the field of flow, and (c) caviting flow with one large cavity about the body.
Journal ArticleDOI
A Laser Surface Textured Parallel Thrust Bearing
TL;DR: In this article, the potential use of a new technology of laser surface texturing (LST) in parallel thrust bearings is theoretically investigated, where the surface texture has the form of micro-dimples with pre-selected diameter, depth, and area density.
Journal ArticleDOI
Experimental Investigation of Laser Surface Textured Parallel Thrust Bearings
TL;DR: In this article, the performance of unidirectional and bi-directional partial-LST bearing with a baseline, untextured bearing is compared with that of a baseline bearing in terms of increased clearance and reduced friction.
Book
The finite journal bearing, considering vaporization (Das Gleitlager von endlicher Breite mit Verdampfung)
Bengt Jakobsson,Leif Floberg +1 more
Journal ArticleDOI
Cavitation in Bearings
and D Dowson,C M Taylor +1 more
TL;DR: A review of the literature on cavitation in bearings can be found in this article, where the authors focus on aqueous systems, and the erosive damage to surfaces bounding a cavitating flow has received much attention.
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