Interfacial configurations and mixing performances of fluids in staggered curved-channel micromixers

Chen, Jyh Jian; Chen, Chun Huei; Shie, Shian Ruei

doi:10.1007/s00542-012-1489-x

Cited by 14 publications

(2 citation statements)

References 25 publications

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“…13,14 According to various mixing laws, mixers can be divided into curved channel type, 15 split and combined type, 16,17 baffle type 18,19 and others. Chen and Shie 20 proposed a staggered curved-channel micromixer. Due to the interlacing of the flow channel, the diffusion distance of the two fluids is shortened, and the mixing intensity increases when one fluid is injected into the other.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a novel ellipsoidal baffle mixer with high mixing efficiency and low pressure drop

Zhao

Sheng

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Throughput, mixing efficiency and pressure drop are three key performance indicators of a mixer or reactor. However, it is difficult to simultaneously achieve high throughput, high mixing efficiency and low pressure drop in a traditional mixer. RESULTS A novel mixer was designed and constructed by adding an ellipsoidal baffle to a large‐scale Y‐shaped mixer (YEBM) through computational fluid dynamics. The effects of ellipsoid period length, short and long axes, rotation direction, rotation angle and entrance angle of the mixer on mixing and flow characteristics were investigated and optimized. Compared with a 1 mm mixer, the throughput of the optimized YEBM is increased 100 times, the mixing efficiency is comparable and the pressure drop is reduced by 7.4%. Additionally, the application range of the YEBM with high mixing efficiency is extended to 499.1 < Re < 999.8. CONCLUSIONS The results showed that the novel ellipsoidal baffle mixer could effectively enhance performance and reduce the pressure drop on the premise of ensuring high throughput. All the findings reported provide useful references for enhancement of mixing efficiency and reduction of pressure drop in a large‐scale mixer. © 2022 Society of Chemical Industry (SCI).

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Section: Introductionmentioning

confidence: 99%

Design and optimization of a novel ellipsoidal baffle mixer with high mixing efficiency and low pressure drop

Zhao

Sheng

et al. 2022

J of Chemical Tech & Biotech

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“…Owing to the absence of turbulence in most microfluidic devices, chaotic mixing is a very important technique for increasing the mixing efficiency of such systems. Chen and Shie [4] presented a planar micromixer with several staggered curved segments for mixing of two fluids using Dean vortices. They examined the effects of various Reynolds numbers and channel configurations on mixing efficiencies.…”

Section: Introductionmentioning

confidence: 99%

The effect of chaotic advection on mixing degree and pressure drop of non-Newtonian fluids flow in curved micromixers

Islami

Khezerloo

Gharraei

2016

J Braz. Soc. Mech. Sci. Eng.

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Since the majority of fluids in engineering and biology applications are non-Newtonian, a numerical investigation was performed on the mixing of non-Newtonian fluids. Chaotic advection is one of the useful mechanisms to enhance the mixing performance which can be generated using curved micromixers. Therefore, mixing of non-Newtonian fluids in curved micromixers was studied in this study. The power-law fluids with power-law indices between 0.49 and 1 and Reynolds numbers between 0.1 and 300 were investigated. Open source CFD code of Open-FOAM was utilized to simulate mixing process in micromixers. The results showed that the mixing index decreases and dimensionless pressure drop increases by decreasing the power-law index. The chaotic advection and mixing index increase by increasing the Reynolds number for all values of power-law index. In addition, micromixers with sharp turns in their geometries yielded efficient mixing performance for low power-law indices and low Reynolds numbers.

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Efficient batch-mode mixing and flow patterns in a microfluidic centrifugal platform: a numerical and experimental study

et al. 2016

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Interfacial configurations and mixing performances of fluids in staggered curved-channel micromixers

Cited by 14 publications

References 25 publications

Design and optimization of a novel ellipsoidal baffle mixer with high mixing efficiency and low pressure drop

Design and optimization of a novel ellipsoidal baffle mixer with high mixing efficiency and low pressure drop

The effect of chaotic advection on mixing degree and pressure drop of non-Newtonian fluids flow in curved micromixers

Efficient batch-mode mixing and flow patterns in a microfluidic centrifugal platform: a numerical and experimental study

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