Floating particles mixing characteristics in an eccentric stirred tank coupled with dislocated fractal impellers
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Deyin Gu
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Xin Li
Abstract
The mixing characteristics of floating particle dispersion process in an eccentric stirred tank with dislocated fractal impellers were investigated using computational fluid dynamics (CFD) and experimental analyses. Solid concentration distribution, axial solid concentration profile, cloud height, solid integrated velocity, power consumption and just drawdown speed were investigated. Results showed that dislocated fractal impeller can enhance solid integrated velocity and fluid turbulent fluctuation intensity compared with dislocated pitched blade impeller, and eccentric agitation coupled with dislocated fractal impeller could destroy the typical circulation loops and symmetric flow field and improve the axial circulation efficiency of floating particles on the basis of dislocated fractal impeller. Eccentric agitation coupled with dislocated fractal impeller could further enhance the floating particle dispersion homogeneity (MI) and decrease the just drawdown speed (N jd) on the basis of dislocated fractal impeller and dislocated pitched blade impeller at the specific power consumption. Meanwhile, eccentric ratio of 0.3 or 0.4 was optimal for the floating particle mixing process in this work.
Funding source: Chongqing Education Commission
Award Identifier / Grant number: KJQN201900802
Funding source: Chongqing Technology and Business University http://dx.doi.org/10.13039/501100004500
Award Identifier / Grant number: 1956006
Funding source: Chongqing Technology and Business University http://dx.doi.org/10.13039/501100004500
Award Identifier / Grant number: 1952041
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Author contribution: Deyin Gu: conceptualization, methodology, software, investigation, formal analysis, supervision, writing-original draft. Xin Li: writing-review and editing. Yi Wang: writing-review and editing. Hui Xu: writing-review and editing. Mei Ye: writing - review and editing. Li Wen: writing - review and editing.
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Research funding: The study was supported by the Science and Technology Research Project of Chongqing Education Commission (KJQN201900802) and Scientific Research Projects for High-Level Talents of Chongqing Technology and Business University (1956006 and 1952041).
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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
- Editorial
- Preface: Special issue of “Multiphase Flows in Process Engineering: Recent Experimental, Theoretical and Numerical Developments”
- Special Issue Articles
- Effects of periodic cavitation on steam–water flow regime transition and mixing near steam nozzle exit
- Effects of boundary walls on the properties of settling spheres
- Convective heat transfer in magnetized flow of nanofluids between two rotating parallel disks
- Nonlinear radiative transport of hybrid nanofluids due to moving sheet with entropy generation
- Modeling evaluation on solid-liquid mixing characteristics in a dislocated guide impeller stirred tank
- Experimental and simulation study on mixing time and suspension quality of liquid-solid flow field in stirred reactor with draft tube
- Heat transfer enhancement of hybrid nanofluids over porous cone
- Numerical study of a fractal-like tree node micromixer based on Murray’s law
- Floating particles mixing characteristics in an eccentric stirred tank coupled with dislocated fractal impellers
Articles in the same Issue
- Frontmatter
- Editorial
- Preface: Special issue of “Multiphase Flows in Process Engineering: Recent Experimental, Theoretical and Numerical Developments”
- Special Issue Articles
- Effects of periodic cavitation on steam–water flow regime transition and mixing near steam nozzle exit
- Effects of boundary walls on the properties of settling spheres
- Convective heat transfer in magnetized flow of nanofluids between two rotating parallel disks
- Nonlinear radiative transport of hybrid nanofluids due to moving sheet with entropy generation
- Modeling evaluation on solid-liquid mixing characteristics in a dislocated guide impeller stirred tank
- Experimental and simulation study on mixing time and suspension quality of liquid-solid flow field in stirred reactor with draft tube
- Heat transfer enhancement of hybrid nanofluids over porous cone
- Numerical study of a fractal-like tree node micromixer based on Murray’s law
- Floating particles mixing characteristics in an eccentric stirred tank coupled with dislocated fractal impellers
