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文章编号： 16726987（2018）02010507； DOI： 10.16351/j.16726987.2018.02.017
孙坤岩a， 宋冠英a， 李镇江a,b*
(青岛科技大学a.机电工程学院，b.中德科技学院，山东 青岛 266061）
摘要： 基于CFD数值模拟技术，对新型撞击流反应器内管内径进行了优化。该反应器由同轴的内外管构成，其中外管固定于机架，内管由锥齿轮带动做旋转运动，内管管壁均匀开设多排微孔，同轴的内外管之间构成环形微反应区。内管内径尺寸直接影响着反应器内部的压力和湍动能的分布，从而决定了微反应区内两种反应液的混合程度，因此它是反应器的一个重要设计参数。本工作系统研究了不同内管内径对环形微反应区内流场结构的影响，结果表明：内管内径为2 mm时，在各排微孔处产生的撞击束均获得了较高的能量，微孔喷射速度大，且其喷射速度和湍动能自上而下逐渐增加，反应液在停留时间较短的反应器的底部，具有更好的撞击效果，有利于反应液的充分混合与反应。
关键词： 旋转式同轴撞击流反应器; 内管内径; CFD数值模拟; 有限元分析
中图分类号： TG 161文献标志码： A
引用格式：孙坤岩， 宋冠英， 李镇江. 基于CFD数值模拟的新型撞击流反应器内管内径的优化\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（2）： 105111.
SUN Kunyan，SONG Guanying, LI Zhenjiang. Optimization of the inner pipe diameter for the new type of impinging stream reactor based on the CFD numerical simulation\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(2)： 105111.
Optimization of the Inner Pipe Diameter for the New Type of Impinging
Stream Reactor Based on the CFD Numerical Simulation
SUN Kunyana，SONG Guanyinga, LI Zhenjianga,b
（a.College of Electromechanical Engineering,
b.College of SinoGerman Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, China）
Abstract: In this paper, the inner pipe diameter of the newstyle impinging stream reactor was optimized by CFD numerical simulation technology. The reactor was consists of the coaxial inside tube and outside tube, in which, the outer tube is fixed on the rack, and the rotation of the inside tube is driven by bevel gear. The multiplerows microporous are uniformly opened on the inside tube wall, and looping microreaction zone was formed among the coaxial inside and outside tube. The size of the inner pipe diameter directly affect the pressure and turbulent kinetic energy distribution of the reaction liquid in looping microreaction zone, and then determine the mixed degree of two kinds of reaction liquid. So the size of the inner pipe diameter is important parameter in design of the reactor. In this paper, the influence of the difference size tube diameter on the flow field structure in the reactor is studied. The results show that high turbulent kinetic energy and the jet velocity were obtained at each microporous, when the inside tube diameter is 2 mm. The jet velocity and turbulent kinetic energy increase gradually from top to bottom, leading to the reaction liquid with short residence time in reaction zone of the reactor bottom has batter impact effect. It is more beneficial to the mixing and reaction of the reaction liquid.
Key words: rotating coaxial impinging stream reactor; the inner pipe diameter; CFD numerical simulation; finite element analysis
收稿日期： 20170310
基金项目： 国家自然科学基金项目（51672144,51572137,51502149,51272117）；山东省自然科学基金项目（ZR2016EMB25）；泰山学者特聘专家计划项目(ts201511034).
作者简介： 孙坤岩（1991—），女，硕士研究生. *通信联系人.
