Numerical Simulation of Electroosmotic Flow in Micro Channels with Analytical Integration of Surface Potential
Zhijian Chen, Mahesh Athavale, Andrzej Przekwas
CFD Research Corporation, US
Keywords: Electroosmotic Flow, Surface Potential, MEMS
We have developed a new methodology to simulate electroosmotic flows in micro channels,
which allows us to accurately produce the effects of the double layer without resolving it.
The method is a subgrid type model that allows computational cells much larger than the
double layer near the wall. This approach thus fully accounts for double-layer physics,
which allows its use on simple as well as complex geometries (e.g. T-junction, X-junction)
where the alternative approach of slip-wall velocities can face difficulties.
NSTI Nanotech 2003 Conference Technical Program Abstract