The Generalized Newtonian Fluid Model and Elastohydrodynamic Film Thickness

作者: Scott Bair , Farrukh Qureshi

DOI: 10.1115/1.1504086

关键词: Stress (mechanics)ViscosityGeneralized Newtonian fluidShear stressNewtonian fluidThermodynamicsNewtonian limitMaterials scienceWork (thermodynamics)Lubrication

摘要: The nature of real shear-thinning in elastohydrodynamic contacts is well-known from both experimental measurement and nonequilibrium molecular dynamics to follow a power-law. Shear-thinning will affect the film thickness when Newtonian limit low enough occur inlet zone (less than about I MPa shear stress). Then kinetic theory tells us that thinning should for weight greater 2000 kg/kmol. We present review generalized models, flow curves lubricants comparison calculated measured thickness. calculations utilize measurable liquid behavior, contrast most previous work.

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