Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
Volume 235, Issue 11, Pages 2295-2315Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1350650121997241
Keywords
Ferrofluid; hybrid journal bearing; groove angle; Reynolds equation; slot entry
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The study showed that the use of a ferrofluid lubricant can provide optimized lubricant film parameters, including lubricant film thickness and fluid film stiffness/damping coefficient, as well as a better stability threshold speed.
The behavior of a slot-entry hybrid herringbone-grooved journal-bearing system lubricated with a ferrofluid lubricant has been numerically studied. The modified Reynolds equation of a ferrofluid bearing model based on the Stokes micro-continuum theory has been numerically solved by a finite-element method. A MATLAB code based on the Gauss-Seidel iteration scheme has been solved to numerically simulate the bearing performance. The simulated results reveal that the use of a ferrofluid lubricant provides enhanced values of lubricant film thickness, fluid film stiffness/damping coefficient, and better stability threshold speed.
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