基于CFD的结晶搅拌反应釜流场分析与改进

doi:10.16182/j.issn1004731x.joss.201805036

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (5): 1900-1907.doi: 10.16182/j.issn1004731x.joss.201805036

基于CFD的结晶搅拌反应釜流场分析与改进

马泽文, 刘涛, 孙旭东

大连理工大学控制科学与工程学院,辽宁大连 116024

收稿日期:2016-05-26 修回日期:2016-07-20 出版日期:2018-05-08 发布日期:2019-01-03
作者简介:马泽文(1990-),男,回族,辽宁丹东,硕士生,研究方向为基于计算流体力学的结晶反应釜流场分析。
基金资助:
国家自然科学基金(61633006),大连理工大学重点培育基金(DUT18ZD201)

CFD Based Analysis and Improvement of the Flow Field of Stirred Tank Reactor for Crystallization

Ma Zewen, Liu Tao, Sun Xudong

School of Control Science and Engineering (SCSE), Dalian university of technology, Dalian 116024, China

Received:2016-05-26 Revised:2016-07-20 Online:2018-05-08 Published:2019-01-03

摘要/Abstract

摘要： 采用计算流体力学(CFD)的方法对1 L结晶搅拌反应釜进行流场分析,首先利用一种CFD软件—FLUENT模拟分析单层涡轮式搅拌桨对搅拌釜内流场分布的影响,使用标准k-ε湍流模型对搅拌水溶液的单相流场进行三维仿真模拟,仿真研究表明模拟流场与实际流场分布相符,可以看出对1 L结晶反应釜的中下部能达到混合均匀,然而反应釜的中上部流场分布不均匀。为此,提出采用两层搅拌桨的方式解决反应釜上下速度不均匀的问题,仿真结果表明两层搅拌桨所产生的上下两个流场能够较好地连接起来,搅拌效果明显优于传统的单浆方式。

关键词: 搅拌反应釜, 计算流体力学, FLUENT软件, 单相流场, 数值模拟

Abstract: The computational fluid dynamics (CFD) method is adopted to analyze the flow field of 1L stirred tank reactor for crystallization. A popular CFD software named FLUENT is used to analyze the influence of a single layer turbine agitator on the flow field in a stirred tank reactor. The standard turbulence model of k-ε is employed to simulate a three-dimensional single-phase flow field of water solution. Simulation studies indicate that the simulated flow field is consistent with real distribution of the flow field, while it is seen that uniform blending can be achieved in the lower and middle parts of the 1 L stirred tank reactor, but the flow field in the upper part is not uniform. To solve the problem, dual impellers are proposed for stirring so as to maintain a uniform speed for both the lower and upper parts of the reactor. Simulation results show that the two flow fields generated by the dual impellers can be well connected, and the blending effect is obviously better than that of traditional single-impeller style.

Key words: stirred tank reactor, computational fluid dynamics, FLUENT, single-phase flow field, numerical simulation

中图分类号:

TP391.9

马泽文, 刘涛, 孙旭东. 基于CFD的结晶搅拌反应釜流场分析与改进[J]. 系统仿真学报, 2018, 30(5): 1900-1907.

Ma Zewen, Liu Tao, Sun Xudong. CFD Based Analysis and Improvement of the Flow Field of Stirred Tank Reactor for Crystallization[J]. Journal of System Simulation, 2018, 30(5): 1900-1907.

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基于CFD的结晶搅拌反应釜流场分析与改进

CFD Based Analysis and Improvement of the Flow Field of Stirred Tank Reactor for Crystallization

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