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Derivation of generalized Maxwell velocity slip model
AIP Conference Proceedings, 2014Based on the conservation of momentum and energy fluxes in the Knudsen layer, a generalized Maxwell velocity slip boundary model is derived in detail using the velocity distribution function from the Grad thirteen moment approximation. The study shows that the generalized Maxwell velocity slip boundary model has the same form as the slip model given by
Qin Yang +3 more
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Experiential investigation of cluster velocity and slip velocity in the CFB riser
Powder Technology, 2020Abstract Cluster velocity and slip velocity are the important features of cluster hydrodynamics and the statistical analysis was carried out based on the moving direct of the clusters in this work. Lagrange approach was employed to compute the velocity of the clusters which were captured by a high speed camera in a thin 2D fluidized bed.
Hengzhi Chen +4 more
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Velocity slip and defect: Hard sphere gas
Physics of Fluids A: Fluid Dynamics, 1989The half-space problem of rarefied gas flow (the Kramers problem) is considered and use of the SN algorithm is outlined. Accurate numerical results for the velocity slip coefficient and velocity defect are obtained for a hard sphere gas and are compared with previously reported results and experimental data.
Loyalka, S. K., Hickey, K. A.
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Wet Compression Analysis Including Velocity Slip Effects
Journal of Engineering for Gas Turbines and Power, 2010Injection of water droplets into industrial gas turbines in order to boost power output is now common practice. The intention is usually to saturate and cool the intake air, especially in hot and dry climates, but in many cases, droplets carry over into the compressor and continue to evaporate.
A. J. White, A. J. Meacock
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Extension of the Helmholtz-Smoluchowski velocity to the hydrophobic microchannels with velocity slip
Lab Chip, 2009Electrokinetic flows through hydrophobic microchannels experience velocity slip at the microchannel wall, which affects volumetric flow rate and solute retention time. The usual method of predicting the volumetric flow rate and velocity profile for hydrophobic microchannels is to solve the Navier-Stokes equation and the Poisson-Boltzmann equation for ...
H M, Park, T W, Kim
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Diffusion Velocities for Algebraic Slip Models
2007Historically stationary bubble flows or particle flows in pipes are investigated by measuring the volumetric flows of gas and liquid among the other flow characteristics. These measurements are easily recomputed in terms of relative cross-section-averaged volume fluxes or relative velocities.
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Velocity Measurements of Bismuth Clusters : Velocity Slip and Fragmentation Processes
1987Bismuth clusters are produced by the inert gas condensation technique. The clusters velocity is studied systematically as a function of the helium pressure. A large velocity slip is observed between He and the clusters. This velocity slip depends on the mass cluster and allows us to select in size the neutral clusters.
M. Broyer +5 more
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Viscoelastic Slip Velocity for Microscale Electrokinetic Flows
ECS Meeting Abstracts, 2016Microscale electrokinetic flows are often analysed neglecting the full details of the dynamics within the electric double layer (EDL) ajacent to solid boundaries. The high-shear velocity profile within the EDL is simplified by the Helmholtz-Smolukowski velocity, imposed in leu of the noslip boundary condition.
Sang W. Joo, Amir Saadat, Bamin Khomami
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Slip Velocity Direction Impacts Wear in Total Knee Arthropolasty
Journal of ASTM International, 2006Abstract Total knee arthroplasties are subjected to high slip velocities and constantly changing velocity vector directions, as they mimic the anatomical conditions of the natural joint. Together with fluid film thickness and applied load, the velocity difference between the two bodies defines the amount of energy that is induced into ...
T Schwenke +3 more
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Electrophoresis of particles with
In the present investigation, it is found that the electrophoretic mobility of hydrophobic particles is affected not only by the zeta potential but also by the velocity slip at the particle surface. From a physicochemical viewpoint, zeta potential represents the surface charge properties and the slip coefficient indicates the hydrophobicity of the ...
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