GONG Lei, WU Jian-kang. Resistance Effect of Electric Double Layer on Liquid Flow in Microchannel[J]. Applied Mathematics and Mechanics, 2006, 27(10): 1219-1225.
Citation: GONG Lei, WU Jian-kang. Resistance Effect of Electric Double Layer on Liquid Flow in Microchannel[J]. Applied Mathematics and Mechanics, 2006, 27(10): 1219-1225.

Resistance Effect of Electric Double Layer on Liquid Flow in Microchannel

  • Received Date: 2005-12-10
  • Rev Recd Date: 2006-07-10
  • Publish Date: 2006-10-15
  • Poisson-Boltzmann equation for electric double layer and Navier-Stokes equation for liquid flows to investigate resistance effect of electric double layer on liquid flow in microchannel were nu merically solved. The dimension analysis indicates that the resistance effect of electric double layer can be estimated by an electric resistance number, which is proportional to the square of the liquid dielec tric constant and the solid surface zeta potential, and inverse-proportional to the liquid dynamic vis cosity, electric conductivity and the square of the channel width. An electric current density balancing (ECDB) condition was proposed to evaluate the flow-induced streaming potential and electric resis tance, instead of conventional electric current balancing(ECB) condition which may induce spurious local backflow in neighborhood of solid wall of the microchannel. The numerical results of the flow rate loss ratio and velocity profile are also given to demonstrate the resistance effect of electric double layer in microchannel.
  • loading
  • [1]
    Mala G M,Li D,Werner C,et al.Flow characteristics of water through a microchannel between two parallel plates with electrokinetic effects[J].Internat J Heat Fluid Flow,1997,18(5):489—495.
    [2]
    Mala G M,Li D. Flow characteristics of water in microtubes[J].Internat J Heat Fluid Flow,1999,20(2):142—148. doi: 10.1016/S0142-727X(98)10043-7
    [3]
    YANG Chun,LI Dong-qing,Masliyah Jacob H. Modeling forced liquid convection in rectangular microchannels with electrokinetic effects[J].Internat J Heat Mass Transfer,1998,41(24):4229—4249. doi: 10.1016/S0017-9310(98)00125-2
    [4]
    REN Li-qing,QU Wei-lin,LI Dong-qing.Interfacial electrokinetic effects on liquid flow in microchannels[J].Internat J Heat Mass Transfer,2001,44(16):3125—3134. doi: 10.1016/S0017-9310(00)00339-2
    [5]
    Chun Myung-Suk,Lee Sang-Yang,Yang Seung-Man.Estimation of zeta-potential by electrokinetic analysis of ionic fluid flows through a divergent microchannel[J].J Colloid Interface Sci,2003,266(1):120—126. doi: 10.1016/S0021-9797(03)00576-9
    [6]
    Dutta Prashanta, Beskok Ali, Warburton Timothy C. Numerical simulation of mixed electroosmotic/pressure driven microflows[J].Numer Heat Transfer, Part A,2002,41(2):131—148. doi: 10.1080/104077802317221366
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (2429) PDF downloads(729) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return