Electroosmotic flow of power-law fluids at high zeta potentials

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• 作者：Nadapana Vasu ; Sirshendu De
• 关键词：Electroosmotic flow ; Zeta potential ; Flow behavior index ; Electric double layer ; Power-law fluid
• 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
• 出版年：2010
• 出版时间：20 September 2010
• 年：2010
• 卷：368
• 期：1-3
• 页码：44-52
• 全文大小：426 K

文摘

In this paper, a mathematical model for electroosmotic flow of power-law fluids in a rectangular microchannel at high zeta potential is analyzed. The electric double layer (EDL) potential distribution is considered without Debye Huckel linear approximation. Numerical solution is obtained to analyze the fluid flow behavior. Parametric studies are conducted to assess the variation of shear stress, viscosity and volumetric flow rates of various values of flow behavior index (n). Computed results are used to explicate the possibility of using a relatively pseudoplastic fluid inside microchannel to obtain higher volumetric flow rates.