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From Salivary Dysfunction to Prosthetic Challenges in Xerostomia and Denture Retention with Oral Gels. [PDF]
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Scientific Lubrication, 1957
The breakdown of laminar flow in the clearance space of a journal is considered, and the point of transition is considered in relation to experiments carried out with ‘bearings’ of large clearance. Experiments involving flow visualization with very large clearance ratios of 0.05 to 0.3 show that the laminar regime gives way to cellular or ring vertices
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The breakdown of laminar flow in the clearance space of a journal is considered, and the point of transition is considered in relation to experiments carried out with ‘bearings’ of large clearance. Experiments involving flow visualization with very large clearance ratios of 0.05 to 0.3 show that the laminar regime gives way to cellular or ring vertices
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Soft Elasto-Hydrodynamic Lubrication
Tribology Letters, 2010This article examines the use of ferrofluids to control starvation in lubricated contacts. Starvation in a ball–plate contact is experimentally studied under sliding–rolling conditions using a Mini Traction Machine (MTM). Friction is measured and the experimental results are presented in the form of Stribeck curves.
Efrén Andablo-Reyes +5 more
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Textured Surface Hydrodynamic Lubrication: Discussion
Tribology Letters, 2012We discuss on a recently presented theory of textured surface hydrodynamic lubrication (Scaraggi, Phys Rev E, 2012). The model, based on the Bruggeman effective medium approach, allows to analytically evaluate the effects of a generic texture shape, distribution, and area density on the macroscopic hydrodynamic characteristics of the contact, such as ...
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Hydrodynamic lubrication of threads
Wear, 1982Abstract Two analytical solutions are derived for the hydrodynamic lubrication of threads. Numerical solution confirms their validity and bridges the gap between the two analytical solutions. The limits of validity of the solutions are discussed in the light of neglected effects which require further consideration.
A. Magnin, J.-M. Piau
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Approximations in Hydrodynamic Lubrication
Journal of Tribology, 1992In this numerical study of the approximations that led Reynolds to the formulation of classical Lubrication Theory, we compare results from (1) the full Navier-Stokes equations, (2) a lubrication theory relative to the “natural,” i.e., bipolar, coordinate system of the geometry that neglects fluid inertia, and (3) the classical Reynolds Lubrication ...
R. X. Dai, Q. Dong, A. Z. Szeri
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Boundary and hydrodynamic lubrication
Wear, 1990Abstract Models of typical characteristics of the surfaces of two interfacing solids under pressure and sliding against each other are described. In the first model, the asperities, wedges of the harder surface, indent into the softer surface due to the applied pressure, producing opposing ridges on the surface of the softer component.
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