Passive Micromixer Platform for Size- and Shape-Controllable Preparation of Ultrafine HNS

Zhao, Shufan; Chen, Cong; Zhu, Peng; Xia, Huan; Shi, Jinyu; Yan, Fanyuhui; Shen, Ruiqi

doi:10.1021/acs.iecr.9b02396

Cited by 51 publications

(12 citation statements)

References 32 publications

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“…6 In chemical microfluidic applications, micromixing and micromixers are mainly used for characterizing nucleation and crystallization kinetics that are not fully comprehended through the traditional large volume reaction. 7,8 They are also utilized for solvent extraction in the liquid-liquid extraction process, 8,9 mixing of dissimilar liquids such as propanol, water, and saline, 10 and in emulsion technology, specifically in the generation of the monodisperse emulsion. 11 Micromixers are used for better thermal control in exothermic reactions polymerization as a result of their large surface-to-volume ratio.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mixing in dual-mode cylindrical magneto-hydrodynamic (MHD) micromixer

Buglie

Tamrin

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The proposed cylindrical magneto-hydrodynamic (MHD) micromixer developed in this study was a geometrically modified conventional T-micromixer combining the characteristics of passive and active micromixers. Characterization was achieved by observing the mixing efficiencies of NaCl solution (1% concentration) based on supplied electrical potential and inlet flow rates. The design mainly aimed to utilize the pumping capability of the magneto-hydrodynamic principle as a secondary element to give counter pumping energy towards inlet flows, such that perturbation of fluid increased mixing performance. NaCl solution was mixed by advection through the stretching and folding by micro-vortices generated in the mixing reservoir. The cylindrical MHD micromixer achieved its highest mixing index of 99.42% at Re = 40 with 3 V of direct-current potential (VDC) supplied to the electrodes. Mixing efficiency increased in a considerably similar and linear pattern for Re = 5, 10, 20, and 40 within the electrical potential range of 0.5 ≤ V ≤ 3.0. Control was gained by manipulating the external electrical potential source which only required a smaller capacity of direct-current voltage sources. Overall, the proposed cylindrical MHD micromixer, which emphasizes the use of inexpensive material and simple design, has been experimentally proven to be practical as compared to the passive and active micromixers found in the literature.

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Section: Introductionmentioning

confidence: 99%

Enhanced mixing in dual-mode cylindrical magneto-hydrodynamic (MHD) micromixer

Buglie

Tamrin

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…However, this strategy is still limited in the field of materials modification. Microfluidics modulates fluids in microscale channels and has broad applications in the design and implementation of high-quality materials. − From the needs of core–shell modification and continuous spheroidization, it can be seen that coupling oscillating–swirling–coflowing microfluidics will provide new opportunities for the design and creation of microspheres with superior core–shell structures via spray-drying. − …”

Section: Introductionmentioning

confidence: 99%

Coupling Oscillating–Swirling–Coflowing: A Microfluidic Strategy for Superior Safety and Output Performance of Core–Shell Energetic Microspheres

Shi

Zhu

Liu

et al. 2022

Ind. Eng. Chem. Res.

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Composite energetic microspheres with core−shell structures have attracted significant attention in solving challenges with low energy and sensitivity. For the superior core−shell and spherical structure, the strategy of coupling oscillating−swirling− coflowing microfluidics with the assistance of spray drying was proposed, which involves model establishment, experimental verification, and performance characterization. The model and verification experiments agreed that the superior core−shell structure and spheroidization can be realized under cocoating and the core−shell ratio of 1:1. Compared with conventional mixtures, the impact sensitivity, friction sensitivity, and burning rate of the sample under optimized conditions significantly improved. It was found that the average burning rate of the propellant added with core−shell energetic microspheres was 5.6% faster than that with the mixture. This study provides critical insights into the design and creation of composite material microspheres with a core−shell structure.

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“…[1][2][3] Mixing is very important for continuous flow chemical processes. Poor mixing efficiency can easily lead to a wide molecular weight distribution of polymer materials, 4,5 a wide particle size distribution of nanomaterials 6,7 and low selectivity of organic synthesis reactions. 8,9 Miniaturization systems with dimensions of no more than 1 mm have great potential for high mixing efficiency.…”

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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Passive Micromixer Platform for Size- and Shape-Controllable Preparation of Ultrafine HNS

Cited by 51 publications

References 32 publications

Enhanced mixing in dual-mode cylindrical magneto-hydrodynamic (MHD) micromixer

Enhanced mixing in dual-mode cylindrical magneto-hydrodynamic (MHD) micromixer

Coupling Oscillating–Swirling–Coflowing: A Microfluidic Strategy for Superior Safety and Output Performance of Core–Shell Energetic Microspheres

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

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