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Ferrofluid lubrication of finite journal bearings using J enkins model
Author(s) -
Laghrabli Salem,
El Khlifi Mohamed,
Nabhani Mohamed,
BouSaïd Benyebka
Publication year - 2017
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1379
Subject(s) - ferrofluid , reynolds equation , lubrication , viscosity , eccentricity (behavior) , mechanics , finite difference method , materials science , magnetic field , finite difference , lubrication theory , reynolds number , physics , mathematics , thermodynamics , composite material , mathematical analysis , turbulence , quantum mechanics , law , political science
The present study investigates hydrodynamic lubrication by ferrofluids of finite journal bearings using the Jenkins model. A magnetic field created by displaced finite wire is used. A numerical solution for the modified Reynolds equation using the finite difference method is obtained. Static characteristics of finite journal bearings are analyzed using 2 control parameters: magnetic force coefficient and Jenkins viscosity. The obtained results are compared to those from Neurenger‐Rosensweig model. It is shown that pressure, load capacity, attitude angle, and side leakage increase and friction factor decreases when increasing the value of each control parameter at low and medium eccentricity ratios. However, the Jenkins viscosity parameter decreases the load capacity and increases the friction factor at high eccentricity ratios.