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Thermoelastohydrodynamic analysis of journal bearings with non-Newtonian Carreau fluids
Author(s)
Aiumpornsin, C.
Date Issued
June 24, 2010
Type
Conference Paper
Abstract
The paper focuses on the solution of a numerical model to explore the journal bearing performance under transient thermal elastohydrodynamic lubrication with non-Newtonian lubricants based on Carreau viscosity model. The newly derived time-dependent modified Reynolds equation and the adiabatic energy equation have been formulated using a non-Newtonian Carreau viscosity model. The simultaneous systems consisting of the modified Reynolds equation, elasticity equation and energy equation with initial conditions were solved numerically using the multi-grid multi-level method with full approximation technique. The analysis showed that the fluid characteristics as defined by the Carreau model, led to large differences in minimum film thickness and maximum temperature rise for bearing liners with low elastic modulus. Copyright © 2009 by ASME.
Citation
Proceedings of the ASME STLE International Joint Tribology Conference 2009 Ijtc2009, 147-149, 2010