首页> 外文会议>6th international conference on nanochannels, microchannels and minichannels 2008 >ROUGHNESS EFFECT ON PRESSURE DROP FOR ELECTROOSMOTIC (EO) FLOW IN MICROTUBES
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ROUGHNESS EFFECT ON PRESSURE DROP FOR ELECTROOSMOTIC (EO) FLOW IN MICROTUBES

机译:粗糙度对微管中电渗流(EO)压降的影响

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摘要

This paper presents a theoretical model of the roughness effect on friction factor and pressure drop of fully developed, laminar flow in microtubes by considering the effect of the electrical double layer. The EDL potential distribution is calculated using the Poisson-Boltzmann equation and then the velocity profile is obtained by solving the fluid momentum equation with a body force term. The wall roughness in microtubes is modeled by utilizing a Gaussian, isotropic distribution. It is found that the effect of roughness is to increase the friction factor and pressure drop of the electroosmotic flow in microtubes.
机译:本文通过考虑双电层的影响,给出了粗糙度对完全发展的层流在微管中的摩擦系数和压降的影响的理论模型。使用Poisson-Boltzmann方程计算EDL电位分布,然后通过使用体力项求解流体动量方程来获得速度分布。微管中的壁粗糙度通过利用高斯各向同性分布进行建模。发现粗糙度的作用是增加微管中电渗流的摩擦系数和压降。

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