Results 11 to 20 of about 359,044 (195)

Local correlation-based transition models for high-Reynolds-number wind-turbine airfoils [PDF]

open access: yesWind Energy Science, 2022
Modern wind-turbine airfoil design requires robust performance predictions for varying thicknesses, shapes, and appropriate Reynolds numbers. The airfoils of current large offshore wind turbines operate with chord-based Reynolds numbers in the range of 3–
Y. S. Jung   +3 more
doaj   +1 more source

Tribotronic Analysis of Internal Combustion Engine Compression Ring

open access: yesTribology Online, 2021
The influence of operating conditions of the compression rings on the engine power losses affects confoundedly the design of the Internal Combustion Engines (ICEs).
Konstantinos Tsatsoulis   +2 more
doaj   +1 more source

On the reynolds lubrication equation [PDF]

open access: yesNonlinear Analysis: Theory, Methods & Applications, 1988
Let Ω be a bounded open set in R 2 with “smooth” boundary ∂Ω. Ω 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 ). The pressure p=p(X) which develops in a fluid layer confined between these two bodies satisfies the so- called Reynolds lubrication equation: (1)
openaire   +1 more source

The Compressible Reynolds Lubrication Equation [PDF]

open access: yes, 1987
We give a general derivation of the Reynolds lubrication equation. We then state and sketch the proofs of some of the authors’ recent results concerning the existence, uniqueness, and qualitative behavior of solutions to the compressible Reynolds lubrication equation. Finally, we give an application of our results to a problem in elastohydrodynamics.
Chipot, M, Luskin, M
openaire   +2 more sources

Multiscale simulation of flow in gas-lubricated journal bearings: A comparative study between the Reynolds equation and lattice Boltzmann methods

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
On account of varying tiny cross-sectional clearance and fairly high bearing speed, the feature of lubricant gas of gas-lubricated journal bearings (GLJBs) is a complex multiscale problem.
Yulong Jiang   +5 more
doaj   +1 more source

Estimation of the Just Suspension Speed in Solid-Liquid Agitated Vessels With Various Impellers

open access: yesJournal of Chemical Engineering of Japan, 2023
The current study proposes a new model equation that takes into account the effects of impeller Reynolds number, particle Reynolds number, and particle concentration on the just suspension state.
Masao Aida, Yuya Murakami, Atsushi Shono
doaj   +1 more source

Lubrication Approximation for Fluids with Shear-Dependent Viscosity

open access: yesFluids, 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

Energy transfer and dissipation in forced isotropic turbulence [PDF]

open access: yes, 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

Fluid Flow and Effect of Turbulence Model on Large-Sized Triple-Offset Butterfly Valve [PDF]

open access: yesJournal 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

Numerical Study of the Effects of the Navier Slip Boundary Condition on the Hydrodynamic Performances of a Newtonian Fluid-lubricated Pad Bearing [PDF]

open access: yesJournal of Applied and Computational Mechanics
This 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

Home - About - Disclaimer - Privacy