학술논문

Design and Simulation of a Novel Micro-mixer with Baffles and Side-wall Injection into the Main Channel
Document Type
Conference
Source
2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on. :721-724 Jan, 2006
Subject
Components, Circuits, Devices and Systems
Bioengineering
Fabrication
Navier-Stokes equations
Design engineering
Systems engineering and theory
Microfluidics
Magnetic analysis
Hydrodynamics
Bars
Bonding
Silicon
micromixer
recirculation
mixing
microfluidic
Language
Abstract
A novel passive micromixer with rapid mixing and low pressure drop has been successfully demonstrated by simulations and micro-fabrication. The structure of this micro-mixer contains one main channel, two sub-channels for injecting the other specie and some baffles in the main channel to form mixing chambers. Adding baffles to the main channel will produce the recirculation to increase the contact area of the fluids and form nozzles. So, this type of design can improve mixing efficiency. The better stream mixing is attributed to the higher baffle, the more baffle number and the higher flow rates. From the design aided by simulations, the design with 3 baffles of 300 gm height is adaptive for uniform mixing (90% mixing) and low supplied pressure of 4750 Pa at Re of 100 in the 3D simulation.