CFD Analysis of Hydrodynamic Pressure Distribution in Non-Newtonian Oil in Journal Bearing Lubrication Gap

Article Preview

Abstract:

This paper presents the results of CFD analysis of the hydrodynamic pressure distribution in slide journal bearings lubricated by non-Newtonian oil. It was assumed that the oil shear stress varies from shear rate according to the Ostwald–de Waele relationship (power law lubricant). The comparison was related to bearings differences only in properties of lubricating oil – Newtonian and non-Newtonian properties; other parameters for both in each case were the same. The Tables show relative decrease of the maximum hydrodynamic pressure value and bearing lift capacity according to the bearing lubricated with Newtonian oil, for different values of bearing relative eccentricity.

You might also be interested in these eBooks

Info:

Periodical:

Solid State Phenomena (Volumes 220-221)

Pages:

37-42

Citation:

Online since:

January 2015

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Z. Nowak, K. Wierzcholski, Flow of a non-Newtonian power law lubricant through the conical bearing gap, Acta Mechanica 50 (1984) 221–230.

DOI: 10.1007/bf01170962

Google Scholar

[2] V. Ramírez-González, J.P. Aguayo, S.E. Quiñones-Cisneros, U.K. Deiters, non-Newtonian viscosity modeling of crude oils–comparison among models, Int. J. Thermophys. 30 (2009) 1089–1105.

DOI: 10.1007/s10765-009-0578-2

Google Scholar

[3] A. Czaban, The influence of temperature and shear rate on the viscosity of selected motor oils, Solid State Phenomena 199 (2013) 188–193.

DOI: 10.4028/www.scientific.net/ssp.199.188

Google Scholar

[4] M. Deligant, P. Podevin, G. Descombes, CFD model for turbocharger journal bearing performances, Applied Thermal Engineering 31 (2011) 811–819.

DOI: 10.1016/j.applthermaleng.2010.10.030

Google Scholar

[5] A. Miszczak, Analiza hydrodynamicznego smarowania ferrociecza poprzecznych lozysk ślizgowych, Fundacja Rozwoju Akademii Morskiej, Gdynia, (2006).

Google Scholar

[6] ANSYS Fluent 12. 0 Theory Guide, April (2009).

Google Scholar