基于CFD数值模拟的新型撞击流反应器内管开孔优化

doi:10.16085/j.issn.1000-6613.2017-0659

化工进展 ›› 2017, Vol. 36 ›› Issue (12): 4385-4391.DOI: 10.16085/j.issn.1000-6613.2017-0659

基于CFD数值模拟的新型撞击流反应器内管开孔优化

李镇江^1,2, 孙坤岩¹, 宋冠英¹

1 青岛科技大学机电工程学院, 山东青岛 266061;
2 青岛科技大学中德科技学院, 山东青岛 266061

收稿日期:2017-04-07 修回日期:2017-06-28 出版日期:2017-12-05 发布日期:2017-12-05
作者简介:李镇江(1963-),男,博士,教授,泰山学者,博士生导师,主要研究方向为功能纳米材料及其合成设备的研制。E-mail:zjli126@126.com。
基金资助:
国家自然科学基金（51672144，51572137，51502149，51272117）、省自然科学基金（ZR2016EMB25）及泰山学者工程专项经费项目。

Optimization of the inner tube openings for the new type of impinging stream reactor based on CFD numerical simulation

LI Zhenjiang^1,2, SUN Kunyan¹, SONG Guanying¹

1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China;
2 College of Sino-German Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

Received:2017-04-07 Revised:2017-06-28 Online:2017-12-05 Published:2017-12-05

摘要/Abstract

摘要： 基于自主设计的同轴撞击流反应器，运用计算机流体力学（CFD）数值模拟技术对内管开孔进行了优化设计。首先通过单因素试验确定了反应液在内外管入口处的速度比例，在此基础上，分别以开孔排数N、内管轴向孔间距L、内管径向开孔个数n及开孔直径D为试验因素，设计正交试验。对每组试验进行数值模拟，以距入口顶端不同距离处微孔的速度均方根差为评价指标，得到内管开孔的优化设计方案为：反应器内管沿轴向均匀开设6排微孔，每排微孔间距为12mm，径向均匀开设5个微孔，孔径均为0.5mm。基于正交试验的优化结果，对模型进行重新定义并对其环形微通道反应区内的流场结构进行数值模拟分析，结果表明：开孔处产生的撞击束均有较高的速度梯度，并且反应液在环形微通道反应区内发生强烈撞击，并发生充分混合与反应，实现了内管开孔的最优化设计。

关键词: 反应器, 计算流体力学, 数值模拟, 优化设计, 微通道

Abstract: Based on the self-designed coaxial impinging stream reactor,the present study optimized the inner tube openings by applying CFD numerical simulation technology. Firstly,the velocity scale of raw material solution in the tube inside and outside the entrance were determined by a single-factor experiment,and then orthogonal test was designed based on perforated row number N,inner tube axial spacing L,the number of radial holes in n and hole diameter D these four test factors respectively. Each set of experiments was designed by numerical simulation,and with micro-holes at different distances from the entrance to the top Speed root-mean-square deviation of evaluation index,the optimization design of inner tube openings was obtained,in which reactor tube evenly along the axial opens 6 micro-holes,with each micro-hole spacing 12mm. Radial direction opens 5 micro-pores evenly,with the aperture of 0.5mm. Based on orthogonal test of optimization results,the model was redefined and circular micro-flow structure within the reaction zone was analyzed by numerical simulation. The results showed that the bombarding beam had a higher velocity gradient and reaction fluid in annular micro-reaction zone not only collide with each other violently,but also they were fully mixed. Finally,this study achieved the optimal design of the inner tube opening.

Key words: reactors, computational fluid dynamics,CFD, numerical simulation, optimal design, microchannels

中图分类号:

TQ016.5⁺5

李镇江, 孙坤岩, 宋冠英. 基于CFD数值模拟的新型撞击流反应器内管开孔优化[J]. 化工进展, 2017, 36(12): 4385-4391.

LI Zhenjiang, SUN Kunyan, SONG Guanying. Optimization of the inner tube openings for the new type of impinging stream reactor based on CFD numerical simulation[J]. Chemical Industry and Engineering Progress, 2017, 36(12): 4385-4391.

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基于CFD数值模拟的新型撞击流反应器内管开孔优化

Optimization of the inner tube openings for the new type of impinging stream reactor based on CFD numerical simulation

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