Hydraulic Characteristics, Residence Time Distribution, and Flow Field of Electrochemical Descaling Reactor Using CFD
Hydraulic Characteristics, Residence Time Distribution, and Flow Field of Electrochemical Descaling Reactor Using CFD
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利用 CFD 研究电化学除垢反应器的水力特性、停留时间分布和流场
DOI：
10.3390/pr9111896
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发表时间：
2021-10
期刊：
影响因子：
3.5
通讯作者：
Yuanfan Ji
中科院分区：
文献类型：
--
作者：
Bolin Hu;Xiaoqiang Zhang;Zhaofeng Wang;Zixian Wang;Yuanfan Ji
利用计算流体力学(CFD)对电化学除鳞反应器内的流场分布进行了三维数值模拟。首先，通过稳态模拟得到了反应器内的流场，并验证了网格独立性。然后对流场的稳态进行判断，以保证模拟结果的准确性。在稳态模拟的基础上进行了暂态模拟，并用脉冲追踪法得到了停留时间分布曲线。利用RTD曲线研究了板高和板间距对反应器水力特性(流动状态和返混)的影响，结果表明，增加板高和减小板间距可以使流动更接近推流，降低反应器内的返混程度。利用CFD提供的流场细节对反应器内的流场进行了分析，并进一步验证了死区和短路区的分布规律。同时，提取了不同工况(极板高度为490 mm、560 mm和630 mm以及极板间距为172.6 mm、129.45 mm和103.56 mm)下的压降信息，结果表明，增加极板高度和减小极板间距会导致压降增加。在这种情况下，更大的压降意味着更高的能源消耗。但是，增加极板高度对能耗的影响小于减小极板间距。
This paper uses computational fluid dynamics (CFD) to simulate flow field distribution inside an electrochemical descaling reactor in three dimensions. First, the reactor flow field was obtained by steady-state simulation, and the grid independence was verified. Then, the steady state of the flow field was judged to ensure the accuracy of the simulation results. Transient simulations were performed on the basis of steady-state simulations, and residence time distribution (RTD) curves were obtained by a pulse-tracing method. The effects of plate height and plate spacing on reactor hydraulic characteristics (flow state and backmixing) were investigated using RTD curves, and the results showed that increasing the plate height and decreasing the plate spacing could make the flow more similar to the plug flow and reduce the degree of backmixing in the reactor. The flow field details provided by CFD were used to analyze the reactor flow field and were further verified to obtain the distribution patterns of dead and short circuit zones. Meanwhile, information regarding pressure drops was extracted for different working conditions (490, 560, and 630 mm for pole plate height and 172.6, 129.45, and 103.56 mm for pole plate spacing), and the results showed that increasing the pole plate height and decreasing the pole plate spacing led to an increased drop in pressure. In this case, a larger pressure drop means higher energy consumption. However, increasing the pole plate height had a smaller effect on energy consumption than decreasing the pole plate spacing.
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影响因子：
3.5
作者：
Qi Xie;Minggang Zheng
通讯作者：
Qi Xie;Minggang Zheng
影响因子：
11.1
作者：
Chunhui Zhang;Jiawei Tang;Guifeng Zhao;Yuan-hui Tang;Jiabin Li;Fuqin Li;H. Zhuang;Jie Chen;Hui Lin;Yizhen Zhang
通讯作者：
Chunhui Zhang;Jiawei Tang;Guifeng Zhao;Yuan-hui Tang;Jiabin Li;Fuqin Li;H. Zhuang;Jie Chen;Hui Lin;Yizhen Zhang
DOI：
10.1007/978-3-319-05092-8_6
发表时间：
2014
期刊：
--
影响因子：
--
作者：
Hugo A. Jakobsen
通讯作者：
Hugo A. Jakobsen
DOI：
10.2166/wst.2017.584
发表时间：
2018-02
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
Suprotim Das;S. Sarkar;Sanjeev Chaudhari
通讯作者：
Suprotim Das;S. Sarkar;Sanjeev Chaudhari
影响因子：
1.4
作者：
H. Tobita
通讯作者：
H. Tobita