Fractal injectors to intensify liquid-phase processes by controlling the turbulent flow field

Jiang, Shuxian; Wang, Jiajun; Feng, Lianfang; Coppens, Marc‐Olivier

doi:10.1016/j.ces.2021.116616

Cited by 8 publications

(3 citation statements)

References 35 publications

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Section: Multi-phase Flow Modelmentioning

confidence: 99%

“…Compared with the Euler-Lagrange method, the Euler-Euler method has a much smaller amount of calculation and more suitable for the numerical calculation of solid-liquid two-phase flows at higher solid contents. 14–16 In this paper, the Euler-Euler method two-phase flow model is used to calculate the stirred flow field using Fluent software. Its continuity equation is as follows. where t is the flow time; ρnormali denotes density of the i-phase fluid; αnormali represents phase holdup of the i-phase fluid; normalunormali refers to time-average velocity of the i-phase fluid; i stands for i-phase, And l indicates liquid phase, s represents solid phase.…”

Section: Cfd Calculation Modelmentioning

confidence: 99%

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Numerical analysis and optimization of key parts in the stirred tank based on solid-liquid flow field

Jiang

Yuan

et al. 2022

Science Progress

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In order to further improve the mixing performance of the mixing device, the structure of the agitator was optimized, and the effects of the diameter and pitch of the agitator on the solid-liquid suspension characteristics were analyzed by single factor method. Multiple reference frame (MRF), computational fluid dynamics, Euler multiphase flow model and standard K- ε turbulence model were used to investigate the effect of the height from the bottom of the agitator on the suspension characteristics of particles in the agitator was studied. The results show that reducing the height from the bottom of the agitator can promote the suspension of particles at the bottom of the tank, but too low height from the bottom will easily produce mixing dead zone at the bottom of the tank, and cause the accumulation of particles. Reducing the height of the agitator from the bottom will enlarge the clear liquid area of the flow field, cause uneven particle distribution and increase the stirring torque. With the increase of agitator diameter, the critical suspension speed of the flow field decrease, but the stirring power required by the flow field increase. Increasing the blade spacing in a certain range can promote the suspension of particles and make the distribution of particles in the flow field more uniform. Therefore, the mixing power and the uniformity of particle concentration distribution need to be considered together in order to make the mixing device more efficient and energy-saving.

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Section: Multi-phase Flow Modelmentioning

confidence: 99%

Section: Cfd Calculation Modelmentioning

confidence: 99%

Numerical analysis and optimization of key parts in the stirred tank based on solid-liquid flow field

Jiang

Yuan

et al. 2022

Science Progress

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“…This systematic, physics-based approach aims to identify the universality of fundamental principles underpinning natural features for process intensification in engineering applications. − Successful applications of NICE include lung-inspired hierarchical transport networks for controlling turbulent flow and cell-inspired antifouling methods for water treatment applications (Figure ). In the field of process intensification, Jiang et al applied the lung-inspired hierarchical transport networks to the design of fractal distributors to control the turbulent flow field in liquid-phase processes . Li et al employed a cell-inspired antifouling method to develop a polydopamine/chitosan modified polyethersulfone microfiltration membrane for antibiosorption properties for water treatment applications .…”

Section: Introductionmentioning

confidence: 99%

Characterizing Flow and Transport in Biological Vascular Systems: A Review from Physiological and Chemical Engineering Perspectives

Chen,

Zhu,

Luo

2023

Ind. Eng. Chem. Res.

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The investigation of biological fluidic mechanisms is a persistent topic of interest and offers valuable inspiration to address the challenges confronting chemical engineering, particularly with respect to the obligations of sustainability. Accordingly, given the advancements of multidisciplinary integration and digital transformation, the methodologies in chemical engineering represent potent instruments for characterizing the flow and transport features of biological vascular systems. In this Review, a qualitative explication of common tubular structures and their corresponding biofluid patterns in both vascular plants and humans is provided, grounded in a physiological perspective. Theoretical and numerical models, such as computational fluid dynamics (CFD), in engineering are introduced as effective and efficient prediction and analysis tools for quantitatively characterizing biofluid transport mechanisms, including fluid−structure interactions. Furthermore, typical pathologies resulting from multiphase biofluid dysfunction in vascular organisms are analyzed with physiological and chemical engineering methodologies. The integrated perspective provides an opportunity to extend the fundamental understanding of biological processes and in turn promotes the nature-inspired transformative advancements in the field of chemical engineering.

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Flow regimes and mixing performance in T-T jet reactor

Bie

Xue

Wang

et al. 2022

Chemical Engineering and Processing - Process Intensification

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Fractal injectors to intensify liquid-phase processes by controlling the turbulent flow field

Cited by 8 publications

References 35 publications

Numerical analysis and optimization of key parts in the stirred tank based on solid-liquid flow field

Numerical analysis and optimization of key parts in the stirred tank based on solid-liquid flow field

Characterizing Flow and Transport in Biological Vascular Systems: A Review from Physiological and Chemical Engineering Perspectives

Flow regimes and mixing performance in T-T jet reactor

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