Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 192, Issue -, Pages 350-360Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.10.109
Keywords
Staggered herringbone micromixer; Multi objective optimization; Mixing index; Friction factor; Mixing sensitivity; Particle tracking
Funding
- National Research Foundation of Korea (NRF) [20090083510]
- Korean government (MSIP) through Multi-phenomena CFD Engineering Research Center
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Shape optimization of a staggered herringbone micromixer (SHM) was performed using the three-dimensional numerical analysis of fluid flows and mixing of two fluids, surrogate modeling, and a multi-objective genetic algorithm. Two design variables related to dimensions of the grooves, i.e., depth and width, were chosen for optimization. Three performance parameters, i.e., the mixing index at the exit of the micromixer, overall friction factor, and mixing sensitivity, which is the mixing index at a specified axial location in upstream part of the micromixer, were employed as the objective functions. Surrogate modeling was performed for the objective functions using response surface approximation. Multi-objective genetic algorithm was used to find the Pareto-optimal solutions. Representative Pareto-optimal designs were analyzed using numerical analysis and a particle tracking method. The optimization results indicate that wide and deep grooves are desirable to promote faster mixing with a low pressure drop inside the SHM. (C) 2013 Elsevier B.V. All rights reserved.
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