Design and Simulation of a Novel Micro-mixer with Baffles and Side-wall Injection into the Main Channel

Chung, Chen-Kuei; Wu, Chih Yang; Shih, T. R.; Wu, Cheng Feng; Wu, B. H.

doi:10.1109/nems.2006.334881

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…In order to achieve rapid mixing in passive micromixers, obstacle structures were inserted into microchannels to enhance the advection effect via splitting, stretching, breaking and folding of liquid flows. Chung et al [30] designed, fabricated and simulated a passive micromixer which contains some baffles with different arrangement. Alam and Kim [31] numerically investigated the mixing of fluids in a microchannel with grooves in its side walls and found out that it has better mixing performance than smooth channel at Re > 10.…”

Section: Global Journal Of Nanomedicinementioning

confidence: 99%

Second Law Analyses of Forced Convection of Low-Reynolds-Number Slip Flow of Nanofluid Inside a Microchannel with Square Impediments

Abbaszadeh¹

2017

GJN

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In this study, the Finite Volume Method is employed in order to investigate the flow field, heat transfer and entropy generation of forced convection of Al2O3-water nanofluid in a parallel plate microchannel. Four square impediments are placed inside the microchannel to enhance mixing of nanofluid. The governing equations, which are accompanied with the slip velocity and temperature jump boundary conditions, are solved by SIMPLER algorithm. The study is conducted for the Reynolds numbers in the range of 0.1 ≤ Re ≤ 10, Knudsen numbers ranging of 0 ≤ Kn ≤ 0.1 and volume fraction of nanoparticles ranging of 0 ≤ ϕ ≤ 3%. The results show that by increasing the volume fraction of nanoparticles or the Reynolds number, the average Nusselt number and the total entropy generation augment. Furthermore, as the Knudsen number increases, both the average Nusselt number and the total entropy generation rate decrease.

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Section: Global Journal Of Nanomedicinementioning

confidence: 99%

Second Law Analyses of Forced Convection of Low-Reynolds-Number Slip Flow of Nanofluid Inside a Microchannel with Square Impediments

Abbaszadeh¹

2017

GJN

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“…In order to achieve rapid mixing in passive micromixers, obstacle structures were inserted into microchannels to enhance the advection effect via splitting, stretching, breaking and folding of liquid flows. Chung et al (2006) designed, fabricated and simulated a passive micromixer which contains some baffles with different arrangement. Alam and Kim (2012) numerically investigated the mixing of fluids in a microchannel with grooves in its side walls and found out that it has a better mixing performance than a smooth channel at Re > 10.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Forced Convection of Nanofluid Flow in Microchannels: Effect of Adding Micromixer

Ababaei

Arani

Aghaei

2017

JAFM

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In the present study, forced convection of CuO-water nanofluid in a two dimensional parallel plate microchannel with and without micromixers has been investigated numerically. Two horizontal hot baffles were inserted between the adiabatic plates and three vertical baffles, which were attached on the plates, worked as micromixers in order to improve the cooling process. The effect of Reynolds number, Re = 10, 30, 60, 100, and 150 and nanoparticles volume fraction, from 0 to 4%, were examined on flow field and heat transfer. Different geometrical configurations for the arrangement of the hot baffles were tested. A FORTRAN code based on finite volume method was developed to solve the governing equations and SIMPLER algorithm was used for handling the pressure-velocity coupling. Simulations showed that the presence of micromixers and increasing the Reynolds number as well as nanoparticles volume fraction, increase the average Nusselt number. In order to achieve maximum heat transfer, best arrangements for the baffles were reported. It was also observed that the size of recirculation zones, which are created behind the micromixer baffles, increases with increasing Reynolds number and leads to better cooling.

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Design and simulation of passive mixing in microfluidic systems with geometric variations

Jeon

Shin

2009

Chemical Engineering Journal

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Design and Simulation of a Novel Micro-mixer with Baffles and Side-wall Injection into the Main Channel

Cited by 7 publications

References 7 publications

Second Law Analyses of Forced Convection of Low-Reynolds-Number Slip Flow of Nanofluid Inside a Microchannel with Square Impediments

Second Law Analyses of Forced Convection of Low-Reynolds-Number Slip Flow of Nanofluid Inside a Microchannel with Square Impediments

Numerical Investigation of Forced Convection of Nanofluid Flow in Microchannels: Effect of Adding Micromixer

Design and simulation of passive mixing in microfluidic systems with geometric variations

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