Particle-resolved PIV experiments of solid-liquid mixing in a turbulent stirred tank

Genghong Li; Zhengming Gao; Zhipeng Li; Jiawei Wang; J. J. Derksen

doi:10.1002/aic.15924

Particle-resolved PIV experiments of solid-liquid mixing in a turbulent stirred tank

Genghong Li, Zhengming Gao, Zhipeng Li, Jiawei Wang, J. J. Derksen

Engineering

Beijing University of Chemical Technology

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

9 Downloads (Pure)

Abstract

Particle Image Velocimetry (PIV) experiments on turbulent solid-liquid stirred tank flow with careful refractive index matching of the two phases have been performed. The spatial resolution of the PIV data is finer than the size of the spherical, uniformly sized solid particles, thereby providing insight in the flow around individual particles. The impeller is a down-pumping pitch-blade turbine. The impeller-based Reynolds number has been fixed to Re=10⁴. Overall solids volume fractions up to 8% have been investigated. The PIV experiments are impeller-angle resolved, i.e. conditioned on the angular position of the impeller. The two-phase systems are in partially suspended states with an inhomogeneous distribution of solids: high solids loadings near the bottom and near the outer walls of the tank, much less solids in the bulk of the tank. The liquid velocity fields show very strong phase coupling effects with the particles increasingly attenuating the overall circulation patterns as well as the liquid velocity fluctuation levels when the solids volume fraction is increased.

Original language	English
Pages (from-to)	389-402
Number of pages	13
Journal	AIChE Journal
Volume	64
Issue number	1
Early online date	25 Aug 2017
DOIs	https://doi.org/10.1002/aic.15924
Publication status	Published - Jan 2018

Bibliographical note

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No.21376016).

Keywords

solid-liquid suspension
particle image velocimetry
refractive index matching
stirred tank
high-resolution flow measurement

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10.1002/aic.15924Licence: Unspecified

Accepted Manuscript
This is the peer reviewed version of the following article: Li, G., Gao, Z., Li, Z., Wang, J. and Derksen, J. J. (2018), Particle-resolved PIV experiments of solid-liquid mixing in a turbulent stirred tank. AIChE J., 64: 389–402., which has been published in final form at DOI: 10.1002/aic.15924. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Accepted author manuscript, 4.67 MBLicence: Unspecified

Cite this

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title = "Particle-resolved PIV experiments of solid-liquid mixing in a turbulent stirred tank",

abstract = "Particle Image Velocimetry (PIV) experiments on turbulent solid-liquid stirred tank flow with careful refractive index matching of the two phases have been performed. The spatial resolution of the PIV data is finer than the size of the spherical, uniformly sized solid particles, thereby providing insight in the flow around individual particles. The impeller is a down-pumping pitch-blade turbine. The impeller-based Reynolds number has been fixed to Re=104. Overall solids volume fractions up to 8% have been investigated. The PIV experiments are impeller-angle resolved, i.e. conditioned on the angular position of the impeller. The two-phase systems are in partially suspended states with an inhomogeneous distribution of solids: high solids loadings near the bottom and near the outer walls of the tank, much less solids in the bulk of the tank. The liquid velocity fields show very strong phase coupling effects with the particles increasingly attenuating the overall circulation patterns as well as the liquid velocity fluctuation levels when the solids volume fraction is increased. ",

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author = "Genghong Li and Zhengming Gao and Zhipeng Li and Jiawei Wang and Derksen, {J. J.}",

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AU - Li, Genghong

AU - Gao, Zhengming

AU - Li, Zhipeng

AU - Wang, Jiawei

AU - Derksen, J. J.

N1 - The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No.21376016).

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N2 - Particle Image Velocimetry (PIV) experiments on turbulent solid-liquid stirred tank flow with careful refractive index matching of the two phases have been performed. The spatial resolution of the PIV data is finer than the size of the spherical, uniformly sized solid particles, thereby providing insight in the flow around individual particles. The impeller is a down-pumping pitch-blade turbine. The impeller-based Reynolds number has been fixed to Re=104. Overall solids volume fractions up to 8% have been investigated. The PIV experiments are impeller-angle resolved, i.e. conditioned on the angular position of the impeller. The two-phase systems are in partially suspended states with an inhomogeneous distribution of solids: high solids loadings near the bottom and near the outer walls of the tank, much less solids in the bulk of the tank. The liquid velocity fields show very strong phase coupling effects with the particles increasingly attenuating the overall circulation patterns as well as the liquid velocity fluctuation levels when the solids volume fraction is increased.

AB - Particle Image Velocimetry (PIV) experiments on turbulent solid-liquid stirred tank flow with careful refractive index matching of the two phases have been performed. The spatial resolution of the PIV data is finer than the size of the spherical, uniformly sized solid particles, thereby providing insight in the flow around individual particles. The impeller is a down-pumping pitch-blade turbine. The impeller-based Reynolds number has been fixed to Re=104. Overall solids volume fractions up to 8% have been investigated. The PIV experiments are impeller-angle resolved, i.e. conditioned on the angular position of the impeller. The two-phase systems are in partially suspended states with an inhomogeneous distribution of solids: high solids loadings near the bottom and near the outer walls of the tank, much less solids in the bulk of the tank. The liquid velocity fields show very strong phase coupling effects with the particles increasingly attenuating the overall circulation patterns as well as the liquid velocity fluctuation levels when the solids volume fraction is increased.

KW - solid-liquid suspension

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KW - refractive index matching

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KW - high-resolution flow measurement

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EP - 402

JO - AIChE Journal

JF - AIChE Journal

IS - 1

ER -

Particle-resolved PIV experiments of solid-liquid mixing in a turbulent stirred tank

Abstract

Bibliographical note

Keywords

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