Results 21 to 30 of about 359,044 (195)
Effect of Relative Velocity Between Rough Surfaces: Hydrodynamic Lubrication of Rotary Lip Seal
International Journal of Applied Mechanics and Engineering, 2017 Since the sixties, most of numerical studies that model the rotary lip seal lubrication have been restricted by assuming that one of the two opposing surfaces is smooth: either the lip or the shaft.
I. Lahjouji +3 more
doaj +1 more source
Vortex/inflectional-wave interactions with weakly three-dimensional input [PDF]
, 2002 The subtle impact of the spanwise scaling in nonlinear interactions between oblique instability waves and the induced longitudinal vortex field is considered theoretically for the case of a Rayleigh-unstable boundary-layer flow, at large Reynolds numbers.
Smith, FT, Timoshin, SN
core +1 more source
Flow stabilization with active hydrodynamic cloaks [PDF]
, 2012 We demonstrate that fluid flow cloaking solutions based on active hydrodynamic metamaterials exist for two-dimensional flows past a cylinder in a wide range of Reynolds numbers, up to approximately 200.
Smith, David R., Urzhumov, Yaroslav A.
core +2 more sources
Effect of Couple Stress Lubrication on Symmetric Hole-Entry Hybrid Journal Bearing
Tribology Online, 2017 The present study deals with capillary compensated symmetric hole-entry hybrid journal bearing under couple stress lubricant. Reynolds equation has been modified considering couple stress lubricant in the bearing system. The Galerkin’s Technique has been
Nathi Ram
doaj +1 more source
Solutions of the Navier–Stokes Equation at Large Reynolds Number [PDF]
, 1975 The problem of two-dimensional incompressible laminar flow past a bluff body at large Reynolds number (R) is discussed. The governing equations are the Navier-Stokes equations. For R = ∞, the Euler equations are obtained. A solution for R large should be
Lagerstrom, Paco A.
core +1 more source
Tribology Online, 2022 This paper presents a modified Reynolds equation for analyzing thin film lubrication with a saturated high-viscosity surface layer on a solid surface.
Kyosuke Ono
doaj +1 more source
Physics-informed neural network for hydrodynamic lubrication with film thickness discontinuity
FrictionRecent advancements in physics-informed neural networks (PINNs) have shown promise in solving partial differential equations (PDEs), including those in hydrodynamic lubrication. However, PINNs struggle with film thickness discontinuities because of their
Bochao Guan +4 more
doaj +1 more source
Lagrangian controllability at low Reynolds number [PDF]
, 2016 In this paper, we establish a result of Lagrangian controllability for a fluid at low Reynolds number, driven by the stationary Stokes equation. This amounts to the possibility of displacing a part of a fluid from one zone to another by suitably using a ...
Glass, O., Horsin, T.
core +5 more sources
A Multicoefficient Slip-Corrected Reynolds Equation for Micro-Thin Film Gas Lubrication
International Journal of Rotating Machinery, 2005 This work investigates and analyzes the performance of conventional slip models among various regimes of Knudsen number and developes a new multicoefficient slip-velocity model, by using Taguchi quality control techniques and numerical analysis.
Ng Eddie Yin-Kwee, Liu Ningyu
doaj +2 more sources
An Enhanced Stochastic Two-Scale Model for Metal-to-Metal Seals
Lubricants, 2018 Leakage in static metal-to-metal seals is predominantly determined by the topography of the contacting surfaces. The topography consists of features that span the entire range from its carefully engineered geometry down to micro-sized surface asperities.
Francesc Pérez-Ràfols +1 more
doaj +1 more source