Numerical simulation of mixed electroosmotic/pressure driven microflows
Numerical simulation of mixed electroosmotic/pressure driven microflows
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DOI：
10.1080/104077802317221366
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发表时间：
2002-02-01
影响因子：
2
通讯作者：
Warburton, TC
中科院分区：
文献类型：
--
作者：
Dutta, P;Beskok, A;Warburton, TC
提出了一种谱元算法，用于分析复杂二维几何结构中电渗透/压力驱动混合流动。新算法在分辨薄双电层时具有光谱精度。在直流道中模拟了混合电渗透/压力驱动流动。探讨了电动泵送和在微通道中产生大压力梯度的方法。最后，分析了不同外电场强下t型结的电渗透流动。在斯托克斯流态中，t型结的流量与电渗透体力呈线性变化。
A spectral element algorithm is developed to analyze mixed electroosmotic/pressure driven flows in complex two-dimensional geometries. The new algorithm exhibits spectral accuracy in resolving thin electric double layers. Mixed electroosmotic/pressure driven flows are simulated in straight channels. Electrokinetic pumping and the means of producing large pressure gradients in microchannels are explored. Finally, electroosmotic flow in a T-junction geometry is analyzed under various external electric field strengths. Flowrate in the T-junction is shown to vary linearly with the electroosmotic body forces in the Stokes flow regime.