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International Journal of Advanced Biological and Biomedical Research
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Volume Volume 1 (2013)
Sezavar, D., Miri, M. (2014). Investigating Fluid Mixing in Electro-Osmotic Flow Through Passive Micro-Mixers Having Square and Triangle Barriers. International Journal of Advanced Biological and Biomedical Research, 2(12), 2940-2948.
Dina Sezavar; Mohadeseh Miri. "Investigating Fluid Mixing in Electro-Osmotic Flow Through Passive Micro-Mixers Having Square and Triangle Barriers". International Journal of Advanced Biological and Biomedical Research, 2, 12, 2014, 2940-2948.
Sezavar, D., Miri, M. (2014). 'Investigating Fluid Mixing in Electro-Osmotic Flow Through Passive Micro-Mixers Having Square and Triangle Barriers', International Journal of Advanced Biological and Biomedical Research, 2(12), pp. 2940-2948.
Sezavar, D., Miri, M. Investigating Fluid Mixing in Electro-Osmotic Flow Through Passive Micro-Mixers Having Square and Triangle Barriers. International Journal of Advanced Biological and Biomedical Research, 2014; 2(12): 2940-2948.

Investigating Fluid Mixing in Electro-Osmotic Flow Through Passive Micro-Mixers Having Square and Triangle Barriers

Article 15, Volume 2, Issue 12, December 2014, Page 2940-2948  XML PDF (577 K)
Document Type: Original Article
Authors
Dina Sezavar1; Mohadeseh Miri 2
1Department of Mechanical Engineering, University of Birjand, Birjand, Iran
2Department of Mechanical Engineering, University of Zabol, Zabol, Iran
Abstract
Objective: In this article, a numerical study is conducted on mixing of two fluids in the liquid phase with two different concentrations of a chemical species in the electro-osmotic flow. Methods: The base liquid is an electrolyte which flows in a two-dimensional micro-channel having electrically charged walls. Lorentz electric force, which is used as stimulating flow factor, is created by applying an external electric field on the electric double layer (EDL) aroused by adjacency of electrolyte and charged wall. Results: To ensure the convergence of the results obtained from the computer program, equations are solved iteratively until the residual amount after solving each equation is less than machine error and independence of results from the number and location of network nodes is verified for an experimental flow. To increase the mixing efficiency, some square and triangle shaped obstacles are embedded on the micro channel wall. Herein, the fundamental principles for passive mixing as well as the effect of frequency and height of the barriers on mixing efficiency are studied. The obtained results from numerical solving of electro-osmotic flow in micro-channel are compared with the theoretical results and a very good agreement is observed.
Keywords
Electro-osmotic; Passive micro-mixer; Barrier-embedded
Main Subjects
Agricultural Machinery
Statistics
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