Numerical Model of Electrokinetic Flow for Capillary Electrophoresis
| Autor: | Lianguang Hu, Jed Harrison, Jacob H. Masliyah |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Physics
Computer simulation Capillary action Analytical chemistry Mechanics Space charge Surfaces Coatings and Films Electronic Optical and Magnetic Materials Physics::Fluid Dynamics Biomaterials Electrokinetic phenomena Nonlinear system Colloid and Surface Chemistry Capillary electrophoresis Flow (mathematics) Electric potential |
| Zdroj: | Journal of Colloid and Interface Science. 215:300-312 |
| ISSN: | 0021-9797 |
| DOI: | 10.1006/jcis.1999.6250 |
| Popis: | A numerical study is presented for the steady electrokinetic flow in intersecting channels in a T-shaped configuration. The electric potential and space charge density distribution along the capillary are obtained numerically by solving the nonlinear Poisson-Boltzmann equation for arbitrary electrokinetic radius and arbitrary surface potential. The velocity and pressure profiles are obtained by solving a modified Navier-Stokes equation using a primitive variable algorithm. A systematic study of flow in T-shaped intersecting channels showed that the hydrodynamic effect is an important factor that influences fluid leakage out of a channel where the electric potential is left floating. It was found that the flow in each channel can be controlled by applying a potential at each reservoir connected to the end of a channel. Copyright 1999 Academic Press. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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