Results 21 to 30 of about 4,129,928 (338)
Energy transfer and dissipation in forced isotropic turbulence [PDF]
, 2015 A model for the Reynolds number dependence of the dimensionless dissipation rate $C_{\varepsilon}$ was derived from the dimensionless K\'{a}rm\'{a}n-Howarth equation, resulting in $C_{\varepsilon}=C_{\varepsilon, \infty} + C/R_L + O(1/R_L^2)$, where $R_L$
Berera, A. +3 more
core +2 more sources
Lubrication Approximation for Fluids with Shear-Dependent Viscosity
Fluids, 2019 We present dimensionally reduced Reynolds type equations for steady lubricating flows of incompressible non-Newtonian fluids with shear-dependent viscosity by employing a rigorous perturbation analysis on the governing equations of motion.
Bruno M.M. Pereira +4 more
doaj +1 more source
Fluid Flow and Effect of Turbulence Model on Large-Sized Triple-Offset Butterfly Valve [PDF]
Journal of Applied Fluid Mechanics, 2023 The performance a valve has been frequently estimated with numerical methods owing to limitations such as cost and place. In this study, for the triple-offset butterfly valves, the different sizes in various disc-opening cases was numerically conducted ...
M. S. Kim +4 more
doaj +1 more source
Space–time Isogeometric flow analysis with built-in Reynolds-equation limit
Mathematical Models and Methods in Applied Sciences, 2019 We present a space–time (ST) computational flow analysis method with built-in Reynolds-equation limit. The method enables solution of lubrication fluid dynamics problems with a computational cost comparable to that of the Reynolds-equation model for the ...
T. Kuraishi, K. Takizawa, T. Tezduyar
semanticscholar +1 more source
, 2020 This paper presents the results of investigations into the applicability of the Reynolds equation for analyzing near field levitation (NFL) phenomena.
N. Brunetière, M. Wodtke
semanticscholar +1 more source
On the reynolds lubrication equation [PDF]
Nonlinear Analysis: Theory, Methods & Applications, 1988 Let \(\Omega\) be a bounded open set in \(R^ 2\) with ``smooth'' boundary \(\partial \Omega\). \(\Omega\) is the region where two solid bodies are in contact. These two solids are moving and the average of their velocities is denoted by \(V=(V_ 1,V_ 2)\).
openaire +1 more source
Numerical Study of the Effects of the Navier Slip Boundary Condition on the Hydrodynamic Performances of a Newtonian Fluid-lubricated Pad Bearing [PDF]
Journal of Applied and Computational MechanicsThis study investigates the impact of the slip boundary condition at the Fluid/Solid interface on the hydrodynamic behavior of a pad bearing through a comprehensive numerical simulation.
Ihssane Messoude, Samir Aghzer
doaj +1 more source
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
A modification on velocity terms of Reynolds equation in a spherical coordinate system
Tribology International, 2019 The widely-used Reynolds equation to simulate fluid lubrication in hip implants by Goenka and Booker has velocity terms accounting just for the rotational motion of the femoral head.
Ehsan Askari Renani, M. Andersen
semanticscholar +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