Results 21 to 30 of about 2,296,216 (242)

The structure and composition of exhumed faults, and their implications for seismic processes [PDF]

open access: yes, 2000
Field studies of faults exhumed from seismogenic depths provide useful data to constrain seismologic models of fault zone processes and properties. Data collected on the San Andreas Fault in the San Gabriel Mountains has shown that large-displacement ...
Robeson, K.   +4 more
core   +6 more sources

Drag Reduction by Riblets on a Commercial UAV

open access: yesApplied Sciences, 2022
Riblets are micro-grooves capable of decreasing skin-friction drag, but recent work suggests that additional benefits are possible for other components of aerodynamic drag. The effect of riblets on a fixed-wing, low-speed Unmanned Aerial Vehicle (UAV) on
Lorenzo Cacciatori   +5 more
doaj   +1 more source

Measurement and Quantification of Effective Slip Length at Solid–Liquid Interface of Roughness-Induced Surfaces with Oleophobicity

open access: yesApplied Sciences, 2018
Boundary conditions of the liquid–solid interface of micro/nano fluid flow are of great interest, as slippage is linked with decreased drag. However, previous studies have seldom included a systematic analysis of the effect of roughness on the ...
Yifan Li, Yunlu Pan, Xuezeng Zhao
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

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

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

The Effect of Wall Shear Stress and Viscous Heating on Nanoscale Flow [PDF]

open access: yesPort Said Engineering Research Journal, 2018
The effect of wall shear stress and viscous heating on nano scale flow properties and boundary conditions is presented. Molecular dynamics (MD) simulations is implemented to handle nano scale force-driven Poiseuille flow bounded by two parallel planner ...
Mohamed Elsabahy   +2 more
doaj   +1 more source

The influence of nano-particle tracers on the slip length measurements by microPTV [PDF]

open access: yes, 2013
Direct measurement of slip length is based on the measured fluid velocity near solid boundary. However, previous micro particle image velocimetry/particle tracking velocimetry (microPIV/PTV) measurements have reported surprisingly large measured near ...
Kong GP(孔高攀)   +3 more
core   +1 more source

Slip length in narrow sealing gaps – an experimental approach [PDF]

open access: yes, 2022
For narrow sealing gaps in average smaller ca. 1 μm it is expected that the no-slip boundary condition does not yield anymore. As a consequence the friction is reduced and the leakage is increased compared to the no-slip design case.
Ludwig, Gerhard   +2 more
core   +1 more source

The influences of electric field intensity and driving force on the slip behaviour of water flow in a nanochannel.

open access: yesPLoS ONE, 2021
In the present work, non-equilibrium molecular dynamics (MD) simulations are used to investigate the flow of liquid water between two metallic solid atomistic smooth walls.
Qiwei Liu   +4 more
doaj   +1 more source

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