Results 21 to 30 of about 45,016 (263)

Lattice Boltzmann Simulation of Fluid Flow Characteristics in a Rock Micro-Fracture Based on the Pseudo-Potential Model

open access: yesEnergies, 2018
Slip boundary has an important influence on fluid flow, which is non-negligible in rock micro-fractures. In this paper, an improved pseudo-potential multi-relaxation-time (MRT) lattice Boltzmann method (LBM), which can achieve a large density ratio, is ...
Pengyu Wang   +3 more
doaj   +1 more source

A study on fundamental water lubrication characteristics of flat thrust bearing with partial water-repellent regions

open access: yesNihon Kikai Gakkai ronbunshu, 2020
The water lubrication characteristic of partial water-repellent (slip) type flat thrust bearings was examined. In this bearing, water-repellent (slip) regions and hydrophilic (non-slip) regions were alternately arranged in the slip direction, and the ...
Akitoshi TAKEUCHI
doaj   +1 more source

Mathematical model and simulation of free balloon liftoff in the presence of surface winds

open access: yesAviation, 2022
A mathematical model of free balloon launches in windy conditions is based on the conservation of the linear momentum in horizontal and vertical axes.
Nihad E. Daidzic
doaj   +1 more source

Numerical analysis of low-Reynolds-number flow past an array of pillars with surface slip

open access: yesNihon Kikai Gakkai ronbunshu
In the development of micro- and nano-fluidic devices incorporating nanopillar structures to create nanoscale confined flow paths, it is important to consider the slip velocity on the pillar surface, which reflects the local wettability.
Takehiro FUJII, Takeshi OMORI
doaj   +1 more source

Solution of Time Periodic Electroosmosis Flow with Slip Boundary

open access: yesAbstract and Applied Analysis, 2014
Recent research confirms that slip of a fluid on the solid surface occurs at micrometer scale. Slip on solid surface may cause the change of interior material deformation which consequently leads to the change of velocity profile and stress field.
Qian Sun   +3 more
doaj   +1 more source

Molecular dynamics investigation of the slip flow liquid–solid interfacial thermal conductance

open access: yesAIP Advances, 2021
With the integrated high-power device packaging structure rapidly developing, the embedded heat dissipation architectures are challenged by the local micro-/nanoscale massive heat flux.
Zhenyu Wang   +4 more
doaj   +1 more source

Wall slip and fluidity in emulsion flow [PDF]

open access: yesPhysical Review E, 2015
The microscopic origin of apparent wall slip is studied systematically using a confocal laser scanning microscope coupled to a rheometer. We obtain flow curves on a model emulsion from classical macroscopic measurements that are compared with flow curves obtained from microscopic measurements. By controlling the wetting properties of the shearing walls,
Paredes, J., Shahidzadeh, N., Bonn, D.
openaire   +4 more sources

Effects of surface charge and boundary slip on time-periodic pressure-driven flow and electrokinetic energy conversion in a nanotube

open access: yesBeilstein Journal of Nanotechnology, 2019
Time-periodic pressure-driven slip flow and electrokinetic energy conversion efficiency in a nanotube are studied analytically. The slip length depends on the surface charge density.
Mandula Buren   +4 more
doaj   +1 more source

Simulation of the Slip Velocity Effect in an AC Electrothermal Micropump

open access: yesMicromachines, 2020
The principal aim of this study was to analyze the effect of slip velocity at the microchannel wall on an alternating current electrothermal (ACET) flow micropump fitted with several pairs of electrodes. Using the finite element method (FEM), the coupled
Fraj Echouchene   +2 more
doaj   +1 more source

Slip coefficient in nanoscale pore flow [PDF]

open access: yesPhysical Review E, 2008
The hydrodynamic solutions based on Maxwell's boundary conditions include an empirical slip coefficient (SC), which depends on properties of the adsorbate and adsorbent. Existing kinetic theory derivations of the SC are usually formulated for half-space flow and do not include finite-size effects, which dominate the flow in nanopores.
Vlad P, Sokhan, Nicholas, Quirke
openaire   +2 more sources

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