The effect of y-component electroosmotic body force in mixed electroosmotic/pressure driven microflows
The effect of y-component electroosmotic body force in mixed electroosmotic/pressure driven microflows
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DOI：
10.1016/j.colsurfa.2010.10.006
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
R. Nosrati;M. Hadigol;M. Raisee
中科院分区：
文献类型：
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作者：
R. Nosrati;M. Hadigol;M. Raisee
本文报道了电渗流/压力驱动下的牛顿流体在狭缝微通道中混合流动的数值分析。采用有限体积法和SIMPLE算法对矩形微通道内的二维拉普拉斯方程、泊松-玻尔兹曼方程和动量方程进行了数值求解。在x和y动量方程中考虑了电渗体积力。研究了考虑y分量电渗体积力对速度分布的影响。研究了外加电场、zeta电位、德拜长度和沟道高度对y向速度分布的影响。数值结果表明，考虑y分量电渗体力的重要性，通过减少zeta电位和德拜长度。
The present study reports numerical analysis for mixed electroosmotic/pressure driven flow of Newtonian fluid in slit microchannels. Two dimensional Laplace, Poisson–Boltzmann, and momentum equations are solved numerically in a rectangular microchannel using finite volume method and SIMPLE algorithm. Electroosmotic body force is considered in x and y-momentum equations. The effect of considering y-component electroosmotic body force in velocity distribution is investigated. Moreover, the effects of external applied electric field, zeta potential, Debye length, and the channel height on y-velocity distribution are studied. The numerical results show importance of considering y-component electroosmotic body force by reduction of zeta potential and Debye length.