Modeling of a Grooved Parallel Bearing with a Mass-Conserving Cavitation Algorithm

Several load-supporting mechanisms have been studied to deal with the cavitation problem in parallel bearings. The formation of cavities and their disposition affect the pressure generated in a continuous thin film and hence the load capacity of bearings. In solving the Reynolds equation, proper cav...

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Bibliographic Details
Published in:Tribology transactions Vol. 54; no. 2; pp. 227 - 236
Main Authors: Wang, Haifeng, Yang, Shuyan, Guo, Feng
Format: Journal Article
Language:English
Published: Philadelphia, PA Taylor & Francis Group 01.03.2011
Taylor & Francis
Taylor & Francis Inc
Subjects:
Algorithms
Applied sciences
Bearing
Bearings
Bearings, bushings, rolling bearings
Cavitation
Cavitation in Hydrodynamics
Computational fluid dynamics
Drives
Exact sciences and technology
Fluid flow
Fluid mechanics
Friction, wear, lubrication
Grooves
Hydrodynamic Bearings
Hydrodynamics
Inlets
Machine components
Materials science
Mechanical engineering. Machine design
Reynolds equation
Roughness Effects in Hydrodynamics
Tribology
Hydrodynamic Bearings
Roughness Effects in Hydrodynamics
Texturation
Roughness
Rough surface
Boundary condition
Cavitation
Layer thickness
Modeling
Cavitation in Hydrodynamics
Thin film
Hydrodynamic lubrication
Hydrodynamic pressure
Cavity
Linear equation
Algebraic equation
Groove
Groove bearing
Reynolds equation
Gauss Seidel method
Finite difference method
Tribology
ISSN:1040-2004, 1547-397X
Online Access:Get full text
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Summary:Several load-supporting mechanisms have been studied to deal with the cavitation problem in parallel bearings. The formation of cavities and their disposition affect the pressure generated in a continuous thin film and hence the load capacity of bearings. In solving the Reynolds equation, proper cavitation boundary conditions must be applied. In this article, the mass-conserving Vijayaraghavan-Keith cavitation algorithm is utilized to analyze the hydrodynamic lubrication performance of parallel bearings with one or more grooves. Using the finite difference method, a one-dimensional Reynolds equation is discretized. Gauss-Seidel iteration is used to solve the obtained set of linear algebraic equations. For a given lubricant, sliding speed, and minimum film thickness, several comparative studies are made between the Vijayaraghavan-Keith cavitation algorithm and a published analytic solution. Several factors affecting the hydrodynamic lubrication performance are considered, such as cavitation pressure, inlet length, groove number, and textured pattern. The analysis results validate the Vijayaraghavan-Keith cavitation algorithm. It is found that the Vijayaraghavan-Keith algorithm is not sensitive to the textured groove depth. In addition, inlet roughness, inlet suction, and quasi-antisymmetric integration are identified to be the essential features that generate hydrodynamic pressure in parallel bearings.
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ISSN:1040-2004
1547-397X
DOI:10.1080/10402004.2010.536613