第18卷第1期 2018年2月
流动与传递
过程工程学报
The Chinese Jourmal of Process Engincering
Vol.18 No.1 Feb.2018
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)
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，用不均匀系数口流量增加，不均匀系数先增加后减小，Q-300和800L/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=10mm时最佳，
关键词：撞击流；浓度场：两相流；混合：数值模拟
中图分类号：TQ021.1
文献标识码：A
文章编号：1009-606X(2018)01-0057-06
NumericalSimulationofConcentrationFieldofLiquid-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 I0142, China)
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 liquidliquid 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 (O), 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 liquidliquid 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 D10 mm. Key words: impinging stream; concentration field; two-phase flow; mixing; numerical simulation
1前言
多相体系中相间传质传热在化学生产和石油化工等过程工业中普遍涉及.目前撞击流技术已在Koppers-Tozek粉煤汽化炉[]、Trost射流研磨机[2]、甲醇合成[3]、湿法脱硫[4]、生物柴油制备[5]等领域成功应用.20世纪 90年代以来，研究转向以液体连续相撞击流(Liquid-continuousImpingingStreams，LIS)为重点[6-8],Shilo等[9] 研究了小喷嘴间距下两平面宽度比分别为2:1和3:1的层流平面喷嘴撞击流的混合，发现当两平面喷嘴宽度比
收稿日期：2017-04-17，修回日期：2017-07-03
基金项目：国家自然科学基金资助项目（编号：21476141)
增加时，撞击流混合指数降低.文献[10,11]利用新型光催化撞击流反应器进行苯酚和污水的降解，降解效率比传统工艺明显提高.Madadi等[12]利用多级轴对称撞击流反应器收集撞击流中磷酸盐粉尘.毕荣山等[13]利用平面激光诱导荧光技术研究了喷射器结构尺寸对端流混合性能的影响.随着计算流体力学(ComputationalFluid Dynamics,CFD)快速发展，实验与模拟结合可更深入地对撞击流特性进行研究[14-21],Liu等[14]基于流流动理论的CFD模型得到模拟一定喷嘴雷诺数范围内的受限撞击流，结果与实验结果吻合较好.Chen等[16]研究了等
作者简介：张建伟(1964-），男，辽宁省义县人，博士，教授，研究方向为新型高效节能过程装备的开发研究，E-mail:zhangjianwei@syucteda.cn 引用格式：张建伟，施博文，冯颖，等，没没状态下渡液两相水平对撞浓度场的数值模报.过程工程学报，2018，18(1)：57-62.
Zhang J W, Shi B W, Feng Y, et al. Numerical Simulation of Concentration Field of LiquidLiquid Two-phase Impinging Streams in Submerged Condition (in Chinese). Chin. J. Process Eng, 2018, 18(1): 5762, DOI: 10.12034/jissn.1009-606X.217219
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