| Type of Document |
Master's Thesis |
| Author |
Travis, Brandon Ewin
|
| Author's Email Address |
brandon.e.travis@gmail.com |
| URN |
etd-12052008-164437 |
| Title |
Fundamental understanding of electroosmotic flow in a heterogeneous converging-diverging circular microchannel |
| Degree |
Master of Science |
| Department |
Mechanical Engineering |
| Advisory Committee |
| Advisor Name |
Title |
| Dongqing Li |
Committee Co-Chair |
| Haoxiang Luo |
Committee Co-Chair |
| D. Greg Walker |
Committee Member |
|
| Keywords |
- electroosmotic flow
- Microfluidics
- converging-diverging microchannel
- Zeta potential
- Electro-osmosis
|
| Date of Defense |
2008-11-19 |
| Availability |
unrestricted |
Abstract
This thesis evaluates the fundamental understanding of electroosmotic flow in a heterogeneous converging-diverging circular microchannel. Three converging-diverging circular microchannels were modeled and the Poisson-Boltzmann equation for the electric double layer as well as the Navier-Stokes and continuity equation for the electroosmotic flow field were solved for each microchannel. Velocity profiles showed a proportional relationship between the applied electric field strength and velocity magnitude. Velocity profiles also showed that microchannels with heterogeneous zeta potential conditions will be greatly influenced by the zeta potentials magnitude and charge, either advancing or retarding the flow. Streamlines showed that the channels with zeta potentials of opposite charge will have zero net flow at low applied electric field strength.
|
| Files |
| Filename |
Size |
Approximate Download Time
(Hours:Minutes:Seconds)
|
| 28.8 Modem |
56K Modem |
ISDN (64 Kb) |
ISDN (128 Kb) |
Higher-speed Access |
| |
Thesis.pdf |
2.20 Mb |
00:10:10 |
00:05:13 |
00:04:34 |
00:02:17 |
00:00:11 |
|
