On a preliminary investigation of Joule heat effect on electroosmotics in microchannels
Date Issued
2006
Date
2006
Author(s)
Lee, Jerry Ming-Che
DOI
zh-TW
Abstract
In order to know the effect of the Joule Heating in micro channels, the governing equations for the microfluidic, including Laplace equation, Poisson-Boltzmann equation, incomepressible Navier-Stokes equations, pressure Poisson equation, energy equation and concentration equation, are numerically simulated by the finite difference method in the non-staggerd two-dimensional grid system. For the sake of accuracy, the convection-diffusion-reaction numerical scheme is employed for all the hydrodynamic and electroosmotic flow equations.
If the temperature effect is not taken into account in the flow field, the curve of velocity remains the same. The contribution of this thesis, under the prescribed applied potential and concentration of the electrolyte solution, is to change the Zeta potential or the electrical conductivity for observing the relation between the temperature and fluid fields. Our aim is to know under what conditions we can not neglect the energy equation.
Subjects
焦耳熱
生物晶片
微流晶片
電滲流
Joule heat
Biochip
Microfluidic
Electroosmotic flow
EOF
Type
thesis
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