CFD research on the influence of geometry characteristic on flow pattern and the transition mechanism in Rushton turbine stirred vessels
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Yinghui Wang
,
Zhenxing Zhu
,
Jinjie Xu
Abstract
In this paper, the transient MRF approach coupled with the standard k-ε and SST k-ω turbulence models was employed to study the effect of bottom shape, impeller diameter (D J) and bottom height (H 2) on critical impeller off-bottom clearance (C). It was found the bottom shape and bottom height (H 2) have obvious influence on the flow pattern transition from double-loop to single-loop of RT impeller. The flow pattern transition mechanism was inferred to relate to the relationship between the space required by the lower circulation zone and the actual space. The boundary conditions of critical C were further concluded to help distinguish the flow pattern and receive the expected one in the stirred vessel design.
Funding source: National Engineering Research Center for Petroleum Refining Technology and Catalyst (RIPP, SINOPEC)
Acknowledgments
The study was carried out at the National Supercomputer Center in Tianjin, China, and the calculations were performed on TianHe-1 (A).
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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: The study was supported by National Engineering Research Center for Petroleum Refining Technology and Catalyst (RIPP, SINOPEC).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Articles
- CFD research on the influence of geometry characteristic on flow pattern and the transition mechanism in Rushton turbine stirred vessels
- Insight on micro bubbling mechanism in a 2D fluidized bed with Group D particles
- Parametric optimization of a coiled agitated vessel with TiO2/water nanofluid
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- DEM study of the angle of repose and porosity distribution of cylindrical particles with different lengths
- Analysis of flow pattern characteristics and strengthening mechanism of co-rotating and counter-rotating mixing with double impellers on different string shafts
- Comprehensive evaluation of the blast furnace status based on data mining and mechanism analysis
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Articles in the same Issue
- Frontmatter
- Articles
- CFD research on the influence of geometry characteristic on flow pattern and the transition mechanism in Rushton turbine stirred vessels
- Insight on micro bubbling mechanism in a 2D fluidized bed with Group D particles
- Parametric optimization of a coiled agitated vessel with TiO2/water nanofluid
- Highly efficient photo-degradation of cetirizine antihistamine with TiO2-SiO2 photocatalyst under ultraviolet irradiation
- DEM study of the angle of repose and porosity distribution of cylindrical particles with different lengths
- Analysis of flow pattern characteristics and strengthening mechanism of co-rotating and counter-rotating mixing with double impellers on different string shafts
- Comprehensive evaluation of the blast furnace status based on data mining and mechanism analysis
- Performance enhancement of commercial ethylene oxide reactor by artificial intelligence approach
- Study of catalytic hydrogenation performance for the Pd/CeO2 catalysts
- Performance of flow distribution in a microchannel parallel flow gas cooler with stepped protrusion depth header
