CFD modeling of turbulent reacting flow in a semi-batch stirred-tank reactor

Xiaoxia Duan; Xin Feng; Chao Yang; Zaisha Mao

doi:10.1016/j.cjche.2017.05.014

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CFD modeling of turbulent reacting flow in a semi-batch stirred-tank reactor

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- CFD modeling of turbulent reacting flow in a semi-batch stirred-tank reactor
- Chinese Journal of Chemical Engineering Vol. 26, Issue 4, Pages: 675-683(2018)
- Affiliations：
  
  2 University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.05.014
  CLC：
- Published：2018
- Accepted：
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Xiaoxia Duan, Xin Feng, Chao Yang, Zaisha Mao. CFD modeling of turbulent reacting flow in a semi-batch stirred-tank reactor[J]. Chin.J.Chem.Eng., 2018, 26(4): 675-683.
DOI：

Xiaoxia Duan, Xin Feng, Chao Yang, Zaisha Mao. CFD modeling of turbulent reacting flow in a semi-batch stirred-tank reactor[J]. Chin.J.Chem.Eng., 2018, 26(4): 675-683. DOI： 10.1016/j.cjche.2017.05.014.

摘要

Abstract

For the mixing-sensitive reactions

both chemical kinetics and mixing conditions of the reactants determine the distributions of products. The direct quadrature method of moments combining with the interaction by exchange with the mean micro-mixing model (DQMOM-IEM) has been validated for the chemical reacting flows in microreactors. Quite encouraging simulation results offer great promise

but the applicability of this method is needed to be explored furthermore

such as in stirred reactors. In this work

the two-environment DQMOM-IEM model was created with C language and used to customize Fluent through the user-defined functions. The mixing effects on the course of parallel competing chemical reactions carried out in a semi-batch single-phase stirred reactor were predicted. The simulation results show that the rising feed velocity enlarges the volume of reaction zone and maximize the yield of the by-product

which also indicates that the feed stream is more difficultly dispersed into the main stream and the zone surrounding feedpipe exit with high turbulent kinetic dissipation rate cannot be efficiently used.

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