Numerical Simulation of Shear and Pressure Driven Flow in Microchannels

2010 ◽  
pp. 149-182
Author(s):  
Y. Jaluria
Keyword(s):  
Numerical Simulation ◽  
Pressure Driven Flow ◽  
Pressure Driven

Numerical and Experimental Studies on Electrical Potential Distribution of Pressure Driven Flow in Parallel Plate Microchannels

2004 ◽  
Author(s):  
Fuzhi Lu ◽  
Jun Yang ◽  
Daniel Y. Kwok
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Parallel Plate ◽  
Potential Distribution ◽  
Continuity Equation ◽  
Electrical Potential ◽  
Double Layers ◽  
Linear Potential ◽  
Pressure Driven Flow ◽  
Pressure Driven

A number of papers have been published on the computational approaches to electrokinetic flows. Nearly all of these decoupled approaches rely on the assumption of the Poisson-Boltzmann equation and do not consider the effect of velocity field on the electric double layers. By means of a charge continuity equation, we present here a numerical model for the simulation of pressure driven flow with electrokinetic effects in parallel-plate microchannels. Our approach is similar to that given by van Theemsche et al. [Anal. Chem., 74, 4919 (2002)] except that we assumed liquid conductivity to be constant and allows simulation to be performed in experimental dimension. The numerical simulation requires the solution of the Poisson equation, charge continuity equation and the incompressible Navier-Stokes equations. The simulation is implemented in a finite-volume based Matlab code. To validate the model, we measured the electrical potential downstream along the channel surface. The simulated results were also compared with known analytical solutions and experimental data. Results indicate that the linear potential distribution assumption in the streaming direction is in general not valid, especially when the flow rate is large for the specific channel geometry. The good agreement between numerical simulation and experimental data suggests that the present model can be employed to predict pressure-driven flow in microchannels.

Pressure driven flow of superfluidHe4through a nanopipe

2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Jeffrey Botimer ◽  
Peter Taborek
Keyword(s):  
Pressure Driven Flow ◽  
Pressure Driven

scholarly journals Molecular dynamics study of pressure-driven water transport through graphene bilayers

2016 ◽  
Vol 18 (3) ◽  
pp. 1886-1896 ◽  
Author(s):  
Bo Liu ◽  
Renbing Wu ◽  
Julia A. Baimova ◽  
Hong Wu ◽  
Adrian Wing-Keung Law ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
High Pressure ◽  
Water Transport ◽  
Layered Structures ◽  
Water Molecules ◽  
Flow Rates ◽  
Ultra High Pressure ◽  
Pressure Driven Flow ◽  
Pressure Driven

Water molecules form layered structures inside graphene bilayers and ultra-high pressure-driven flow rates can be observed.

scholarly journals Instabilities of a pressure-driven flow of magnetorheological fluids

2013 ◽  
Vol 57 (4) ◽  
pp. 1121-1146 ◽  
Author(s):  
L. Rodríguez-Arco ◽  
P. Kuzhir ◽  
M. T. López-López ◽  
G. Bossis ◽  
J. D. G. Durán
Keyword(s):  
Magnetorheological Fluids ◽  
Pressure Driven Flow ◽  
Pressure Driven
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