Results 1 to 10 of about 60,180 (186)

Wind turbine main-bearing lubrication – Part 1: An introductory review of elastohydrodynamic lubrication theory [PDF]

open access: yesWind Energy Science, 2022
This paper is the first in a two-part study on lubrication in wind turbine main bearings. Elastohydrodynamic lubrication is a complex field, the formulas and results from which should not be applied blindly, but with proper awareness and consideration of
E. Hart, E. de Mello, R. Dwyer-Joyce
doaj   +1 more source

Effect of Contact Angle Hysteresis on Evaporation Dynamics of a Sessile Drop on a Heated Surface [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Contact angle hysteresis (CAH) is a significant factor affecting the drop motion on solid substrates. A model of CAH is introduced to explore the influence of CAH on the dynamics of a sessile drop on a uniformly heated surface, and a two-dimensional ...
X. M. Ye   +3 more
doaj   +1 more source

Application limits of molecular gas film lubrication equation against surface roughness (The characteristics and the effect of transverse flow for shear flow)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
The effects of surface roughness on the molecular gas lubrication characteristics have been studied for defining the application limits of Molecular gas film lubrication (MGL) equation against the roughness.
Jun-ichi ICHIHARA
doaj   +1 more source

Lubrication Modelling of Artificial Joint Replacements: Current Status and Future Challenges

open access: yesLubricants, 2022
This paper reviews the recent advancements in computational modelling of the lubrication of hip and knee joint replacements, especially those concerning Professor Duncan Dowson’s contribution.
Leiming Gao   +4 more
doaj   +1 more source

Identification of Bearing Dynamic Parameters and Unbalanced Forces in a Flexible Rotor System Supported by Oil-Film Bearings and Active Magnetic Devices

open access: yesActuators, 2021
As the rotational speed of conventional rotor systems supported by oil-film bearings has increased, vibration problems such as oil whip and oil whirl have become apparent.
Yinsi Chen   +4 more
doaj   +1 more source

Mixed Lubrication Modeling of Multi-Lip Reciprocating Seals Based on Elastohydrodynamic Lubrication Theory

open access: yesMachines, 2022
Multi-lip reciprocating seals are extensively used in the subject of engineering equipment. However, the current research on the tribology of reciprocating seals mainly focused focuses on the numerical analysis of single-lip seals.
Donghong Cheng, Lichen Gu, Yu Sun
doaj   +1 more source

Novel Aspects of Cilia-Driven Flow of Viscoelastic Fluid through a Non-Darcy Medium under the Influence of an Induced Magnetic Field and Heat Transfer

open access: yesMathematics, 2023
The spontaneous movement of natural motile cilia in the form of metachronal waves is responsible for fluid transport. These cilia, in particular, play important roles in locomotion, feeding, liquid pumping, and cell delivery.
Muhammad Mubashir Bhatti   +3 more
doaj   +1 more source

Experimental Study of Cavitation Development and Secondary Circulation Flow between Two Eccentric Cylinders

open access: yesFluids, 2022
The flow of a hydrophobic fluid in the gap between eccentric cylinders has been experimentally studied. The experimental setup was designed and built for this study.
Anatoliy Monakhov, Nikolay Bukharin
doaj   +1 more source

Inertial Lubrication Theory

open access: yesPhysical Review Letters, 2010
Thin fluid films can have surprising behavior depending on the boundary conditions enforced, the energy input and the specific Reynolds number of the fluid motion. Here we study the equations of motion for a thin fluid film with a free boundary and its other interface in contact with a solid wall. Although shear dissipation increases for thinner layers
Rojas, N. O.   +3 more
openaire   +5 more sources

Lift force acting on a levitating drop over a moving wall

open access: yesNihon Kikai Gakkai ronbunshu, 2015
We experimentally investigate a levitating drop over a moving wall. Between the drop and the wall, a thin air film exists. In this study particular attention is given to examine whether the lift force generated inside the thin air film is dominant force ...
Masafumi SAITO, Yoshiyuki TAGAWA
doaj   +1 more source

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