Simulation analysis of agitating flow field in largethreonine fermentor based on Fluent

Authors

LI Jin, School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
SHI Xiudong, School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
WANG Chen, Jiangsu Province Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China
FENG Weijian, Jiangsu Province Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China

Abstract

The flow field in large threonine fermentor as the research object, by using Fluent software, combining the parameters of threonine fermentation process, and the method of computational fluid dynamics with Multiple Reference Frame and Eulerian multiphase flow model was used to the simulation of single-phase flow and gas-liquid two-phase flow in the mixing process of four stage impeller assembly in fermentor. Distribution of fluid field、power of impeller and volume fraction of gas-phase were also analyzed. The results show that the power of submerged impeller was not affected by the increase of liquid level, and the increase of density in the fermentation process would lead to an increase in the power of the impeller and the two factors are approximately proportional. Moreover the total power of the propeller decreased by 20.9% after aeration, the average volume fraction of gas was stable at about 21.4%.

Publication Date

1-28-2019

First Page

120

Last Page

123,176

DOI

10.13652/j.issn.1003-5788.2019.01.021

Recommended Citation

Jin, LI; Xiudong, SHI; Chen, WANG; and Weijian, FENG (2019) "Simulation analysis of agitating flow field in largethreonine fermentor based on Fluent," Food and Machinery: Vol. 35: Iss. 1, Article 21.
DOI: 10.13652/j.issn.1003-5788.2019.01.021
Available at: https://www.ifoodmm.cn/journal/vol35/iss1/21

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