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Numerical Investigation into Mixing Efficiency of T-Micromixers with Elliptic Barriers


Affiliations
1 Mechanical Department, Ziane Achour University, 17000 Djelfa, Algeria
2 Gas Turbine Joint Research Team, Ziane Achour University, 17000 Djelfa, Algeria
3 Department of Electrical Engineering, Ziane Achour University, 17000 Djelfa, Algeria
 

This paper proposes a numerical study of the heat transfer and mixing properties of two liquid samples in a two-dimensional T- microchannel with and without elliptic barriers. The effects of various parameters such as mixing efficiency and thermal mixing efficiency and performance index, pressure drop have been analyzed and compared, at Reynolds numbers ranging from 5 to 500. The vortical structure of the flow is examined too. Modeling was performed for laminar flow using the CFD code with water/Al2O3 nanofluid at two volume fractions, base fluid (𝝋=0%) and nanofluid (𝝋=0.5%), and Three cases were chosen and simulated. The results indicated that adding elliptic barriers can enhance the mixing efficiency greater than 80%, performed considerably fine and had a very good quality of performance compared to the standard T-mixer with the cost of a higher pressure drop.

Keywords

T-Microchannel, Elliptic Barriers, Mixing Efficiency, Performance Index, Thermal Mixing, Pressure Drop
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  • Numerical Investigation into Mixing Efficiency of T-Micromixers with Elliptic Barriers

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Authors

A. Mahammedi
Mechanical Department, Ziane Achour University, 17000 Djelfa, Algeria
M. Telha
Mechanical Department, Ziane Achour University, 17000 Djelfa, Algeria
T. T. Naas
Gas Turbine Joint Research Team, Ziane Achour University, 17000 Djelfa, Algeria
A. Amari
Department of Electrical Engineering, Ziane Achour University, 17000 Djelfa, Algeria

Abstract


This paper proposes a numerical study of the heat transfer and mixing properties of two liquid samples in a two-dimensional T- microchannel with and without elliptic barriers. The effects of various parameters such as mixing efficiency and thermal mixing efficiency and performance index, pressure drop have been analyzed and compared, at Reynolds numbers ranging from 5 to 500. The vortical structure of the flow is examined too. Modeling was performed for laminar flow using the CFD code with water/Al2O3 nanofluid at two volume fractions, base fluid (𝝋=0%) and nanofluid (𝝋=0.5%), and Three cases were chosen and simulated. The results indicated that adding elliptic barriers can enhance the mixing efficiency greater than 80%, performed considerably fine and had a very good quality of performance compared to the standard T-mixer with the cost of a higher pressure drop.

Keywords


T-Microchannel, Elliptic Barriers, Mixing Efficiency, Performance Index, Thermal Mixing, Pressure Drop

References