The Generalized Newtonian Fluid Model and Elastohydrodynamic Film Thickness

[+] Author and Article Information
Scott Bair

Georgia Institute of Technology, Center for High Pressure Rheology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332-0405

Farrukh Qureshi

Physical & Analytical Sciences, The Lubrizol Corporation, 29400 Lakeland Boulevard, Wickliffe, OH 44092-2298

J. Tribol 125(1), 70-75 (Dec 31, 2002) (6 pages) doi:10.1115/1.1504086 History: Received February 07, 2002; Revised June 21, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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Comparison of non-equilibrium molecular dynamics (States S) and experiment (States E) for squalane at pressures to 1 GPa, reproduced from 7. Units of reduced viscosity, ηr, are mPa⋅s and reduced shear rate, γ̇r, are s−1 .
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A comparison of some data of Eyring 15 with the Prandtl-Eyring and Ree-Eyring models. The Carreau-Yasuda model is also shown.
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The molecular weight of some liquid lubricants as a function of viscosity near ambient conditions. The broken line separates shear-thinning inlet behavior, above, from Newtonian, below.
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Comparison of pressure-viscosity coefficients derived from film thickness 32 with those obtained by viscosity measurement for branched perfluorinated polyethers (PFPE Y)
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Flow curves for silicone oils of the same viscosity grades used by Dyson and Wilson 5
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Calculations of film thickness using the Carreau equation and measured parameters compared with the data of Dyson and Wilson 5 for rolling and sliding contact




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