Journal
AICHE JOURNAL
Volume 61, Issue 6, Pages 1912-1924Publisher
WILEY
DOI: 10.1002/aic.14781
Keywords
electroosmotic flow; microfluidics; mass transport; surface reaction; nonNewtonian fluids
Categories
Funding
- Iran's National Elites Foundation (INEF)
Ask authors/readers for more resources
Consideration is given to shear-rate-dependent rheology effects on mass transport in a heterogeneous microreactor of rectangular cross section, utilizing both numerical and analytical approaches. The carrier liquid obeys the power-law viscosity model and is actuated primarily by an electrokinetic pumping mechanism. It is discovered that, considering the shear-thinning biofluids to be Newtonian fluids gives rise to an overestimation of the saturation time. The degree of overestimation is higher in the presence of large Damkohler numbers and electric double layer thicknesses. It is also increased by the application of a favorable pressure gradient, whereas the opposite is true when an opposed pressure gradient is applied. In addition, a channel of square cross section corresponds to the maximum fluid rheology effects. Finally, the numerical results indicate the existence of a concentration wave when using long channels. This is confirmed by analytical solutions, providing a closed form solution for wave propagation speed. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 1912-1924, 2015
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available