Results 31 to 40 of about 1,150 (171)

Analysis of the Reynolds Equation for Lubrication in Case of Pressure-Dependent Viscosity [PDF]

Mathematical Problems in Engineering, 2013
We study the Reynolds equation, describing the ow of a lubricant, in case of pressure-dependent viscosity. First we prove the existence and uniqueness of the solution. Then, we study the asymptotic behavior of the solution in case of periodic roughness via homogenization method. Some interesting nonlocal effects appear due to the nonlinearity.
Marušić-Paloka, Eduard, Marušić, Sanja   +1 more
openaire   +2 more sources

Establishment and Numerical Analysis of Lubrication Model of Double Involute Gear

MATEC Web of Conferences, 2016
The purpose of this paper is to derive the simplified elastohydrodynamic (EHD) lubrication model of the double involute gear (DIG) and study the effect of the segmented tooth waist on the lubricating properties of DIG.
Fan Zhimin, Xu Jun
doaj   +1 more source

Derivation of the Reynolds equation for lubrication of a rotating shaft [PDF]

Archivum Mathematicum, 2000
In this paper, using the asymptotic expansion, we prove that the Reynolds lubrication equation is an approximation of the full Navier– Stokes equations in thin gap between two coaxial cylinders in relative motion. Boundary layer correctors are computed. The error estimate in terms of domain thickness for the asymptotic expansion is given. The corrector
Duvnjak, Antonija, Marušić-Paloka, Eduard   +1 more
openaire   +2 more sources

Thrust Bearing with Rough Surfaces Lubricated by an Ellis Fluid

International Journal of Applied Mechanics and Engineering, 2014
In the paper the influence of bearing surfaces roughness on the pressure distribution and load-carrying capacity of a thrust bearing is discussed. The equations of motion of an Ellis pseudo-plastic fluid are used to derive the Reynolds equation.
A. Walicka, E. Walicki, P. Jurczak, J. Falicki   +3 more
doaj   +1 more source

Reynolds Equation for a Micro-Scale Lubrication of a Gas Between Eccentric Circular Cylinders with an Arbitrary Temperature Difference Based on Slip-Flow Theory

Lubricants
Micro-scale lubrication flow of a gas between eccentric circular cylinders with an arbitrary temperature difference is studied on the basis of the Navier–Stokes set of equations and the velocity slip and temperature jump boundary conditions.
Toshiyuki Doi
doaj   +1 more source

Mixed Lubrication Analysis of Vane Sliding Surface in Rotary Compressor Mechanisms

Tribology Online, 2009
In order to investigate the effects of the elastic deformation of the vane-slot on the lubrication characteristics of the vane sliding surface in a rotary compressor, a mixed lubrication analysis considering the elastic deformation has been performed for
Yasutaka Ito, Hitoshi Hattori, Kazuhiko Miura   +2 more
doaj   +1 more source

A new drag and lift correlation for spherocylinders from fully resolved Immersed Boundary Method

AIChE Journal, EarlyView.
Abstract Many industrial processes deal with non‐spherical particles, e.g., mineral mining and biomass conversion. It is crucial to understand the particles' hydrodynamics to control and optimize these processes. To extend the current state‐of‐the‐art from arrays of spherical particles to spherocylindrical particles, we performed extensive particle ...
A. H. Huijgen, Y. Sterkenburgh, Y. Tang, N. G. Deen, M. W. Baltussen   +4 more
wiley   +1 more source

On flow of power-law fluids between adjacent surfaces: Why is it possible to derive a Reynolds-type equation for pressure-driven flow, but not for shear-driven flow?

Applications in Engineering Science, 2023
Flows of incompressible Navier–Stokes (Newtonian) fluids between adjacent surfaces are encountered in numerous practical applications, such as seal leakage and bearing lubrication.
Andreas Almqvist, Evgeniya Burtseva, Kumbakonam Rajagopal, Peter Wall   +3 more
doaj   +1 more source

Solid particles focusing, orienting, and de‐focusing in planar Poiseuille flow

AIChE Journal, EarlyView.
Abstract Three‐dimensional, time‐dependent lattice‐Boltzmann simulations of neutrally buoyant particles in planar Poiseuille flow have been performed. The particles are spherical or cylindrical (the latter with a length over diameter ratios in the range 1/3 to 2) and have volume fraction ranging from virtually zero (one particle) to 0.15. The channel's
J. J. Derksen
wiley   +1 more source

Theoretical analysis of effect of MHD, couple stress and slip velocity on squeeze film lubrication of rough Triangular plates

International Journal of Thermofluids
In this study, Christensen's stochastic theory is utilized on rough surfaces' hydrodynamic lubricating effect to examine how surface roughness, couple stress fluid, slip velocity, magnetohydrodynamic (MHD), and the triangular surface interact.
Vinutha R, Hanumagowda B. N, Vasanth K. R, Ganesh Kumar K   +3 more
doaj   +1 more source