Effect of a new pattern of surface roughness on flow field and erosion rate of a cyclone
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Ehsan Dehdarinejad
Abstract
This paper evaluates the impact of a special design of non-uniform surface roughness on the operating parameters of a gas–solid cyclone numerically. The cyclone surface is divided into 32 separate rings with different roughness heights when the roughness height varies from 0.2 to 3 mm. The results show that the tangential velocity is reduced and the axial velocity is enhanced by increasing the height of non-uniform roughness. It is observed that the cyclone with smooth walls can collect 7 μm solid particles while 3.7 and 2.77 μm particles can be separated by one-inlet and two-inlet cyclones, respectively. For the cut-off size diameter of d50, the one-inlet cyclone with smooth walls can collect the particles with a diameter of 1.24 µm, while the cyclone with RNu = 0.2, 0.5, 1, 2, and 3 mm can collect 1.3, 1.6, 1.8, 0.83, and 1.88 µm particles, respectively. The results demonstrate that the erosion rate decreases with the roughness and this reduction is larger for the one-inlet cyclone.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Articles
- Reinterpretation of the Geldart A powder classification based on Eulerian–Eulerian CFD simulation
- Evaluation of ion transport properties characterizing concentration polarization in membrane-solution system under different factors
- Effect of a new pattern of surface roughness on flow field and erosion rate of a cyclone
- The influence of central coke charging mode on the burden surface shape and distribution of a blast furnace
- CFD-based approach to design the heart-shaped micromixer with obstacles
- New insights into fluid mixing in micromixers with fractal wall structure
- Improved degradation of tetracycline antibiotic in electrochemical advanced oxidation processes (EAOPs): bioassay using bacteria and identification of intermediate compounds
- Numerical investigation on the laminar combustion characteristics of primary reference fuel: the effects of elevated temperatures and pressures
- Analysis and optimization of feed liquid flow characteristics of distributor in scraping film molecular distillation equipment
Artikel in diesem Heft
- Frontmatter
- Articles
- Reinterpretation of the Geldart A powder classification based on Eulerian–Eulerian CFD simulation
- Evaluation of ion transport properties characterizing concentration polarization in membrane-solution system under different factors
- Effect of a new pattern of surface roughness on flow field and erosion rate of a cyclone
- The influence of central coke charging mode on the burden surface shape and distribution of a blast furnace
- CFD-based approach to design the heart-shaped micromixer with obstacles
- New insights into fluid mixing in micromixers with fractal wall structure
- Improved degradation of tetracycline antibiotic in electrochemical advanced oxidation processes (EAOPs): bioassay using bacteria and identification of intermediate compounds
- Numerical investigation on the laminar combustion characteristics of primary reference fuel: the effects of elevated temperatures and pressures
- Analysis and optimization of feed liquid flow characteristics of distributor in scraping film molecular distillation equipment
