浸没状态下液-液两相水平对撞浓度场的数值模拟

doi:10.12034/j.issn.1009-606X.217219

过程工程学报 ›› 2018, Vol. 18 ›› Issue (1): 57-62.DOI: 10.12034/j.issn.1009-606X.217219

浸没状态下液-液两相水平对撞浓度场的数值模拟

张建伟^*，施博文，冯颖，张志刚

沈阳化工大学能源与动力工程学院，辽宁沈阳 110142

收稿日期:2017-04-17 修回日期:2017-07-03 出版日期:2018-02-22 发布日期:2018-01-29
通讯作者: 张建伟 zhangjianwei@syuct.edu.cn
基金资助:
基于激光测量技术的双多组浸没撞击流流场特性的非线性研究

Numerical Simulation of Concentration Field of Liquid-Liquid Two-phase Impinging Streams in Submerged Condition

Jianwei ZHANG^*, Bowen SHI, Ying FENG, Zhigang ZHANG

School of Energy and Power Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China

Received:2017-04-17 Revised:2017-07-03 Online:2018-02-22 Published:2018-01-29
Contact: ZHANG Jian-wei zhangjianwei@syuct.edu.cn

摘要/Abstract

摘要： 用Fluent软件对水和甲苯液?液两相撞击流进行了模拟，研究了浸没状态下液?液两相撞击流的浓度场，用不均匀系数比较和分析了不同截面的浓度场，研究了不同进口流量(Q)、喷嘴直径(D)和两喷嘴间距(L)下浓度场的变化规律. 结果表明，随进口流量增加，不均匀系数先增加后减小，Q=300和800 L/h时不均匀系数均低于0.04；随两喷嘴间距增加，不均匀系数持续增加，L≤3D时不均匀系数均小于0.05，液?液两相撞击流在小喷嘴间距下混合效果好；随喷嘴直径增加，不均匀系数先减小后增加，在D=10 mm时最佳.

关键词: 撞击流, 浓度场, 两相流, 混合, 数值模拟

Abstract: The numerical simulation of water and toluene two-phase impinging stream was performed by Fluent software to investigate the characteristics of concentration field of submerged liquid?liquid two-phase impinging stream. The concentration field of different sections was compared and analyzed by non-uniformity coefficient. The variation rules of concentration fields under different inlet flow rates (Q), inlet diameters (D) and two nozzle spacings (L) were obtained. The results showed that the non-uniformity coefficient increased first and then decreases with the increase of inlet flow rate. When Q=300 and 800 L/h, the non-uniformity coefficient was less than 0.04. With the increase of two nozzle spacing, the non-uniformity coefficient continued to increase. The non-uniformity coefficient was less than 0.05 when L≤3D. This phenomenon showed that liquid?liquid two-phase impinging stream had well mixing effect with small nozzle spacing. With nozzle diameter increasing, non-uniformity coefficient increased firstly and then decreased with the best value at D=10 mm.

Key words: impinging stream, concentration field, two-phase flow, mixing, numerical simulation

张建伟施博文冯颖张志刚. 浸没状态下液-液两相水平对撞浓度场的数值模拟[J]. 过程工程学报, 2018, 18(1): 57-62.

Jianwei ZHANG Bowen SHI Ying FENG Zhigang ZHANG. Numerical Simulation of Concentration Field of Liquid-Liquid Two-phase Impinging Streams in Submerged Condition[J]. Chin. J. Process Eng., 2018, 18(1): 57-62.

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浸没状态下液-液两相水平对撞浓度场的数值模拟

Numerical Simulation of Concentration Field of Liquid-Liquid Two-phase Impinging Streams in Submerged Condition

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