Analysis of Porous Layered Journal Bearing Lubricated with Ferrofluid

Article Preview

Abstract:

This paper presents an analysis of porous layered long journal bearing lubricated with ferrofluid using displaced infinitely long wire magnetic field model. The ferrofluid flow in the porous region is analyzed using modified Brinkman model. Nondimensional pressure and shear stress expressions are derived using Reynolds boundary conditions. Nondimensional load capacity and coefficient of friction are evaluated under the influence of permeability of porous media, porous layer thickness, lubricant layer thickness, magnetic field intensity and distance ratio parameter. A porous layered journal bearing lubricated with ferrofluid increases the load carrying capacity and reduces the coefficient of friction.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

474-478

Citation:

Online since:

January 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] J.A. Tichy, A Porous Media Model for Thin Film Lubrication, J Tribol-T ASME. 117 (1995) 16-21.

Google Scholar

[2] J.A. Tichy, A Surface Layer model for Thin Film Lubrication, Tribol T. 38 (1995) 577-582.

Google Scholar

[3] J-R. Lin, C-C. Hwang, R-F. Yang, Hydrodynamic Lubrication of Long, Flexible, Porous Journal Bearings Using the Brinkman Model, Wear. 198 (1996) 156-164.

DOI: 10.1016/0043-1648(96)06968-2

Google Scholar

[4] W-L Li, Derivation of Modified Reynolds Equation – A Porous Media Model, J Tribol-T ASME. 121 (1999) 823-828.

Google Scholar

[5] W-L. Li, H-M. Chu, Modified Reynolds Equation for Couple Stress Fluids – A Porous Media Model, Acta Mech. 171 (2004) 189-202.

DOI: 10.1007/s00707-004-0123-0

Google Scholar

[6] A.A. Elsharkawy, Effects of Lubricant Additives on the Performance of Hydrodynamically Lubricated Journal Bearings. Tribol Lett. 18 (2005) 63-73.

DOI: 10.1007/s11249-004-1758-7

Google Scholar

[7] A.Z. Szeri, Composite-film Hydrodynamic Bearings, Int J Eng Sci. 48 (2010) 1622-1632.

Google Scholar

[8] T.A. Osman, G.S. Nada, Z.S. Safar, Effect of Using Current-Carrying-Wire Models in the Design of Hydrodynamic Journal Bearings Lubricated with Ferrofluid, Tribol Lett. 11 (2001) 61-70.

Google Scholar

[9] T.A. Osman, G.S. Nada, Z.S. Safar, Static and Dynamic Characteristics of Magnetized Journal Bearings Lubricated with Ferrofluid, Tribol Int. 34 (2001) 369-380.

DOI: 10.1016/s0301-679x(01)00017-2

Google Scholar

[10] T-C. Hsu, J-H. Chen, H-L. Chiang, T-L Chou, Lubrication Performance of Short Journal Bearings Considering the Effects of Surface Roughness and Magnetized Field, Tribol Int. 61 (2013) 169-175.

DOI: 10.1016/j.triboint.2012.12.016

Google Scholar

[11] T.V.V.L.N. Rao, A.M.A. Rani, T. Nagarajan, F.M. Hashim, Analysis of Two-Layered Journal Bearing Lubricated with Ferrofluid, MATEC Web Conf. 13 (2014) 04031.

DOI: 10.1051/matecconf/20141304031

Google Scholar