CFD analysis and RSM optimization of obstacle layout in Tesla micromixer

Wang, Xiaowen; Yang, Lihong; Sun, Fujia

doi:10.1515/ijcre-2021-0087

Cited by 13 publications

(10 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noted that all previous studies on the Tesla micromixer utilized the mixing index calculation based on either grayscale-, hue/saturation/intensity (HIS)-or frame-dependent HIS method [8,9,11,12,[14][15][16][17][18]. In these methods, the originally taken digital image by the microscope that contains individual redgreen-blue (RGB) pixel values was first averaged before the mixing index is computed.…”

Section: Theorymentioning

confidence: 99%

“…This agrees well with the findings by Porwal et al [10] who further showed that heat transfer enhancement in reversed flow was attributed to the flow bifurcation and fluid stagnation. Furthermore, it has been numerically demonstrated that suitable embedment of obstacles in the shape of plates [11] and diamond [12] within the Tesla valve was capable of significantly enhancing the mixing performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Fluid Mixing Using a Reversed Multistage Tesla Micromixer

et al. 2022

View full text Add to dashboard Cite

A two‐dimensonal Tesla micromixer is experimentally characterized at varying Reynolds numbers (Re) and valve stages with the aim to acquire sufficiently high mixing performance. To ease fabrication, a simplified Tesla valve design is adopted. Results show two distinctive regimes of low and high Re. In the low‐Re regime, a steady incremental mixing was observed as the fluid passes by each valve, whereas an enhanced mixing was identified right in the first valve in the high‐Re regime. This is predominantly due to the amplified opposing flow from the helix branch which promotes stronger chaotic advection in the main microchannel. Interestingly, the measured mixing performance was found comparable to that of three‐dimensional passive micromixers reported in the literature.

show abstract

Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Fluid Mixing Using a Reversed Multistage Tesla Micromixer

et al. 2022

View full text Add to dashboard Cite

show abstract

“…To achieve the mixing of multiple solutions, three inlets are designed in our micromixer, whereas a design with double outlets is employed to facilitate the simultaneous observation and collection of the mixture. Different from previous Tesla valve micromixers with a fan-shaped structure [30,40,41], the island of our Tesla valve is designed as a curved-edge trapezoidal structure, which effectively increases the length of the flow channel and the mixing time of solutions. Besides, the Coanda effect occurs because of the influence of wall friction and fluid viscoelastic force, causing the solution to flow close to the channel wall of the island [42].…”

Section: Design Of Micromixermentioning

confidence: 99%

“…Besides, the additional mechanical, electrical, and thermal reactions generated by active micromixers can have a bad impact on the mixing efficiency [26][27][28]. Compared with active micromixers, passive micromixers can be operated without using external force fields and are widely studied due to the advantages of low cost, ease of fabrication, and simple operation [29][30][31][32]. The passive micromixers contain two main types of structures: splitand-recombination (SAR) and expansion.…”

Section: Introductionmentioning

confidence: 99%

A novel 3D Tesla valve micromixer for efficient mixing and chitosan nanoparticle production

et al. 2022

View full text Add to dashboard Cite

Current three-dimensional micromixers for continuous flow reactions and nanoparticle synthesis are complex in structure and difficult to fabricate. This paper investigates the design, fabrication, and characterization of a novel micromixer that uses a simple spatial Tesla valve design to achieve efficient mixing of multiple solutions. The flow characteristics and mixing efficiencies of our Tesla valve micromixer are investigated using a combination of numerical simulations and experiments. The results show that in a wide range of flow rates, viscoelastic solutions with different concentrations can be well mixed in our micromixer. Finally, experiments on the synthesis of chitosan nanoparticles are conducted to verify the practicability of our micromixer. Compared with nanoparticles prepared by conventional magnetic stirring, the size of nanoparticles prepared by micromixing is smaller and the distribution is more uniform. Therefore, our Tesla valve micromixer has significant advantages and implications for mixing chemical and biological reactions.

show abstract

“…Heat transmission can be made better using this idea. Tesla structure is widely used due to its simple structure and special flow mechanism [1]. Therefore, research on the development of the Tesla valve in a coiled and three-dimensional form is relevant.…”

Section: Introductionmentioning

confidence: 99%

Identifying of the effect of the number of tesla fuses in a coiled collector on direct and reverse heat transfer

Majdi¹,

Altalib

Abdullah

et al. 2022

EEJET

View full text Add to dashboard Cite

Work was done on the Tesla valve in this study with a coiled and three-dimensional shape, where a different number of these channels and a direct and reverse flow turbine were used to compare the changes that obtain the amount of pressure and temperatures. With the conception of the technology of transferring heat energy in various heat exchangers, it became necessary to develop our technologies that increase the transmission of this energy, and we must refer to the inventions that contributed to the development of the heat transfer system and the three energy laws. They contributed to the development of some mechanical systems, where the Tesla valve is considered one of the valves that have two directions of flow, the first is direct, in which the pressure value is low, and the other is reverse, which occurs when movement is disturbed due to the direction of the channel in which it can be used. This concept can be used to improve heat transfer. Where the results establish that an increase in the number of channels positively affects the pressure and thus gives more outlets for the passage of water, a study has shown. In the case of four channels an exit temperature of 304.14 K was obtained, which is the highest temperature reached in cases where the direction of flow is direct. The pressure value was in the case in which the channel is a quadrilateral, and the pressure value reached 209 pa. This data are useful and important because the direct exit score has reached 305.74 K for the Tesla valves, which are designed to give enough time for the heat to transfer to the water. The main principle of the Tesla valve is the reverse direction, which works to obstruct the movement of the fluid, and thus increases the pressure and reduces the velocity of the flow

show abstract

CFD analysis and RSM optimization of obstacle layout in Tesla micromixer

Cited by 13 publications

References 16 publications

Enhanced Fluid Mixing Using a Reversed Multistage Tesla Micromixer

Enhanced Fluid Mixing Using a Reversed Multistage Tesla Micromixer

A novel 3D Tesla valve micromixer for efficient mixing and chitosan nanoparticle production

Identifying of the effect of the number of tesla fuses in a coiled collector on direct and reverse heat transfer

Contact Info

Product

Resources

About