Cavitation Mechanism of Oil-Film Bearing and Development of a New Gaseous Cavitation Model Based on Air SolubilitySource: Journal of Tribology:;2012:;volume( 134 ):;issue: 003::page 31701DOI: 10.1115/1.4006702Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cavitation phenomenon in lubricants significantly influences the performance of associated machinery. In this paper, the cavitation mechanism of an oil-film bearing is attributed to gaseous cavitation, and a new gaseous cavitation model based on air solubility in the lubricant is presented. The model is validated using the Reynolds equation algorithm for fixed-geometry oil-film journal bearing, and the predicted results at different eccentricity ratios show good agreement with published data. The analyses show that gaseous mechanism can explain the cavitation phenomena that occur in the bearing except for very heavy load cases. In particular, this new model is compatible with the Jakobsson–Floberg–Olsson condition. Therefore, the new model has an explicit physical meaning, can produce good results, can identify whether vaporous cavitation occurs, and more importantly, can provide a novel means of developing cavitation models for low-vapor-pressure lubricants.
keyword(s): Pressure , Cavitation , Bearings AND Mechanisms ,
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contributor author | Xue-song Li | |
contributor author | Yin Song | |
contributor author | Zeng-rong Hao | |
contributor author | Chun-wei Gu | |
date accessioned | 2017-05-09T00:54:39Z | |
date available | 2017-05-09T00:54:39Z | |
date copyright | July, 2012 | |
date issued | 2012 | |
identifier issn | 0742-4787 | |
identifier other | JOTRE9-28794#031701_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/150333 | |
description abstract | Cavitation phenomenon in lubricants significantly influences the performance of associated machinery. In this paper, the cavitation mechanism of an oil-film bearing is attributed to gaseous cavitation, and a new gaseous cavitation model based on air solubility in the lubricant is presented. The model is validated using the Reynolds equation algorithm for fixed-geometry oil-film journal bearing, and the predicted results at different eccentricity ratios show good agreement with published data. The analyses show that gaseous mechanism can explain the cavitation phenomena that occur in the bearing except for very heavy load cases. In particular, this new model is compatible with the Jakobsson–Floberg–Olsson condition. Therefore, the new model has an explicit physical meaning, can produce good results, can identify whether vaporous cavitation occurs, and more importantly, can provide a novel means of developing cavitation models for low-vapor-pressure lubricants. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Cavitation Mechanism of Oil-Film Bearing and Development of a New Gaseous Cavitation Model Based on Air Solubility | |
type | Journal Paper | |
journal volume | 134 | |
journal issue | 3 | |
journal title | Journal of Tribology | |
identifier doi | 10.1115/1.4006702 | |
journal fristpage | 31701 | |
identifier eissn | 1528-8897 | |
keywords | Pressure | |
keywords | Cavitation | |
keywords | Bearings AND Mechanisms | |
tree | Journal of Tribology:;2012:;volume( 134 ):;issue: 003 | |
contenttype | Fulltext |