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Effective Boundary Slip Induced by Surface Roughness and Their Coupled Effect on Convective Heat Transfer of Liquid Flow. [PDF]

open access: yesEntropy (Basel), 2018
As a significant interfacial property for micro/nano fluidic system, the effective boundary slip can be induced by the surface roughness. However, the effect of surface roughness on the effective slip is still not clear, both increased and decreased ...
Pan Y, Jing D, Zhang H, Zhao X.
europepmc   +2 more sources

Research on boundary slip of hydrostatic lead screw under different driving modes. [PDF]

open access: yesSci Rep, 2021
The flow state of oil film in the hydrostatic lead screw directly affects the transmission performance of the screw pair. The static and dynamic characteristics of a new type of double driven hydrostatic screw-nut pair (DDHSNP) are studied under ...
Liu Y, Feng X, Li Y, Lu J, Su Z.
europepmc   +2 more sources

Slip boundary effect on the critical Reynolds number of subcritical transition in channel flow

open access: yesTheoretical and Applied Mechanics Letters, 2023
In this letter, the effect of slip boundary on the origin of subcritical transition in two-dimensional channel flows is studied numerically and theoretically.
Yue Xiao, Linsen Zhang, Jianjun Tao
doaj   +1 more source

A Three-Dimensional Slip Velocity Model for Water-Lubricated Hydrodynamic Journal Bearings

open access: yesJournal of Marine Science and Engineering, 2022
Hydrodynamic journal bearings, coated with polytetrafluoroethylene (PTFE) and lubricated by water, have been widely used in ships and large-scale pumps, and the function is to maintain the stability of rotor system.
Yandong Gu   +4 more
doaj   +1 more source

A review on slip boundary conditions at the nanoscale: recent development and applications

open access: yesBeilstein Journal of Nanotechnology, 2021
The slip boundary condition for nanoflows is a key component of nanohydrodynamics theory, and can play a significant role in the design and fabrication of nanofluidic devices.
Ruifei Wang   +7 more
doaj   +1 more source

Effect of pH on Effective Slip Length and Surface Charge at Solid–Oil Interfaces of Roughness-Induced Surfaces

open access: yesMicromachines, 2021
In the development of micro/nano fluid control systems, fluid resistance has always been one of the key factors restricting its development. According to previous studies, it is found that the boundary slip effect of the solid-liquid interface can ...
Porui Tian, Yifan Li
doaj   +1 more source

Boundary slip dependency on surface stiffness [PDF]

open access: yesPhysical Review E, 2010
The paper investigates the effects of surface stiffness on the slip process aiming to obtain a better insight of the momentum transfer at nanoscale. The surface stiffness is modeled through the stiffness, κ, of spring potentials, which are employed to construct the thermal walls. It is shown that variations of stiffness, κ, influence the slip mechanism
Asproulis, Nikolaos, Drikakis, Dimitris
openaire   +4 more sources

Exact Solutions for Non-Isothermal Flows of Second Grade Fluid between Parallel Plates

open access: yesNanomaterials, 2023
In this paper, we obtain new exact solutions for the unidirectional non-isothermal flow of a second grade fluid in a plane channel with impermeable solid walls, taking into account the fluid energy dissipation (mechanical-to-thermal energy conversion) in
Evgenii S. Baranovskii
doaj   +1 more source

Three-Dimensional Simulations of Anisotropic Slip Microflows Using the Discrete Unified Gas Kinetic Scheme

open access: yesEntropy, 2022
The specific objective of the present work study is to propose an anisotropic slip boundary condition for three-dimensional (3D) simulations with adjustable streamwise and spanwise slip length by the discrete unified gas kinetic scheme (DUGKS).
Wenqiang Guo, Guoxiang Hou
doaj   +1 more source

Roughness Induced Boundary Slip in Microchannel Flows [PDF]

open access: yesPhysical Review Letters, 2007
Surface roughness becomes relevant if typical length scales of the system are comparable to the scale of the variations as it is the case in microfluidic setups. Here, an apparent boundary slip is often detected which can have its origin in the assumption of perfectly smooth boundaries.
Kunert, C.M., Harting, J.D.R.
openaire   +3 more sources

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