Results 21 to 30 of about 55,859 (248)

Dynamic and Static Characteristics of Wavy Annular Seals in Turbulent Flow

open access: yesTribology Online, 2010
This paper presents results of a theoretical analysis to determine the leakage flow and dynamic characteristics of circumferential wave geometry annular seals using turbulent lubrication theory.
Satyam Shivam Gautam, Mihir Kumar Ghosh
doaj   +1 more source

Air cushioning with a lubrication/ inviscid balance [PDF]

open access: yes, 2003
The air cushioning effect in the gap between an almost inviscid body of water and a nearby solid wall (or another body of water) is studied theoretically and is found to depend on predominantly lubricating forces in the air, in certain applications.
Li, L., Smith, F.T., Wu, G.X.
core   +1 more source

Isothermal Elasto-hydrodynamic Lubrication Analysis of the Roller Enveloping End Face Meshing Worm Drive

open access: yesJixie chuandong, 2022
Based on the transmission theory of single roller enveloping end face meshing worm drive and isothermal elastohydrodynamic lubrication theory, and considering the influence of surface wavy roughness, a numerical analysis method is adopted to analyze the ...
Xiaolong Wang, Honghui Liao
doaj  

Bio-Mechanical and Bio-Rheological Aspects of Sickle Red Cells in Microcirculation: A Mathematical Modelling Approach

open access: yesFluids, 2021
Sickle cell disease (SCD) is an inherited monogenic disease characterized by distorted red blood cells that causes vaso-occlusion and vasculopathy. Presently, electrophoresis of haemoglobin and genotyping are used as routine tests for diagnosis of the ...
Purnima Chaturvedi   +2 more
doaj   +1 more source

Free surface flows with large slopes: beyond lubrication theory

open access: yes, 2006
The description of free surface flows can often be simplified to thin film (or lubrication) equations, when the slopes of the liquid-gas interface are small.
Hocking L. M.   +2 more
core   +1 more source

A coupled finite-volume CFD solver for two-dimensional elasto-hydrodynamic lubrication problems with particular application to rolling element bearings [PDF]

open access: yes, 2016
This paper describes a new computational fluid dynamics methodology for modelling elastohydrodynamic contacts. A finite-volume technique is implemented in the ‘OpenFOAM’ package to solve the Navier-Stokes equations and resolve all gradients in a ...
Dini, D   +3 more
core   +1 more source

Analysis of Elastohydronamic Lubrication of the Roller Enveloping End Face Engagement Worm Drive

open access: yesJixie chuandong, 2020
To study the lubrication performance of roller enveloping end face engagement worm drive, the elastohydrodynamic lubrication (EHL) model is established based on meshing theory of roller enveloping end face engagement worm drive and the theory of EHL ...
Xiaolong Wang
doaj  

Saffman–Taylor instability in eccentric cylinders at gaseous cavitation

open access: yesFriction, 2023
A flow of silicon fluid in the gap between eccentric cylinders was studied experimentally. The condition of gaseous cavitation inception during the rotation of internal cylinder was considered.
Anatoliy A. Monakhov, Nikolay Bukharin
doaj   +1 more source

Lubrication and Lubricants A Treatise on the Theory and Practice of Lubrication, and on the Nature, Properties, and Testing of Lubricants [PDF]

open access: yesNature, 1907
THIS work may be divided into two parts, which, in fact, have little connection with one another, The first is that which deals with the chemical and physical properties of lubricants generally, and will appeal more particularly to analytical chemists, to whom samples of lubricants are submitted for the purpose of estimating their commercial value.
openaire   +1 more source

Universal mechanism for air entrainment during liquid impact [PDF]

open access: yes, 2015
When a mm-sized liquid drop approaches a deep liquid pool, both the interface of the drop and the pool deform before the drop touches the pool. The build up of air pressure prior to coalescence is responsible for this deformation. Due to this deformation,
Bouwhuis, Wilco   +4 more
core   +2 more sources

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