A simulation of an unbaffled stirred tank reactor driven by a magnetic stirring rod was carried out in a moving reference frame. The free surface of unbaffled stirred tank was captured by Euler–Euler model coupled with the volume of fluid (VOF) method. The re-normalization group (RNG) k–ɛ model, large eddy simulation (LES) model and detached eddy simulation (DES) model were evaluated for simulating the flow field in the stirred tank. All turbulence models can reproduce the tangential velocity in an unbaffled stirred tank with a rotational speed of 150 rpm, 250 rpm and 400 rpm, respectively. Radial velocity is underpredicted by the three models. LES model and RNG k–ɛ model predict the better tangential velocity and axial velocity, respectively. RNG k–ɛ model is recommended for the simulation of the flow in an unbaffled stirred tank with magnetic rod due to its computational effort.
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Research Article|
July 07 2015
CFD simulation of an unbaffled stirred tank reactor driven by a magnetic rod: assessment of turbulence models
Jiajia Li;
Jiajia Li
1Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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Baoqing Deng;
1Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
E-mail: bqdeng@usst.edu.cn
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Bing Zhang;
Bing Zhang
1Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2Research Reactor Institute, Kyoto University, Kyoto, Japan
3College of Engineering, Kyung Hee University, Yongin 446-701, Korea
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Xiuzhong Shen;
Xiuzhong Shen
2Research Reactor Institute, Kyoto University, Kyoto, Japan
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Chang Nyung Kim
Chang Nyung Kim
3College of Engineering, Kyung Hee University, Yongin 446-701, Korea
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Water Sci Technol (2015) 72 (8): 1308–1318.
Article history
Received:
December 28 2014
Accepted:
June 02 2015
Citation
Jiajia Li, Baoqing Deng, Bing Zhang, Xiuzhong Shen, Chang Nyung Kim; CFD simulation of an unbaffled stirred tank reactor driven by a magnetic rod: assessment of turbulence models. Water Sci Technol 1 October 2015; 72 (8): 1308–1318. doi: https://doi.org/10.2166/wst.2015.314
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