东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (3): 357-362.DOI: 10.12068/j.issn.1005-3026.2018.03.011

• 材料与冶金 • 上一篇    下一篇

自搅拌反应器内液相流动的数值模拟

郭旭桓, 张子木, 赵秋月, 张廷安   

  1. (东北大学 多金属共生矿生态化冶金教育部重点实验室, 辽宁 沈阳110819)
  • 收稿日期:2016-10-31 修回日期:2016-10-31 出版日期:2018-03-15 发布日期:2018-03-09
  • 通讯作者: 郭旭桓
  • 作者简介:冯明杰(1971-), 男, 河南禹州人, 东北大学副教授; 王恩刚(1962-), 男, 辽宁沈阳人, 东北大学教授,博士生导师.郭旭桓(1986-),男,山西洪洞人,东北大学博士研究生; 张廷安(1960-),男,河南周口人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51171041).国家自然科学基金资助项目 (51204040,U1202274); 中央高校基本科研业务费专项资金资助项目 (N130607001, N140204017); 辽宁省教育厅科学技术研究项目(L2014096);辽宁省自然科学基金资助项目(2015020591).

Numerical Simulation of Liquid Phase Flow in a Self-Stirring Reactor

GUO Xu-huan, ZHANG Zi-mu, ZHAO Qiu-yue, ZHANG Ting-an   

  1. Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2016-10-31 Revised:2016-10-31 Online:2018-03-15 Published:2018-03-09
  • Contact: ZHAO Qiu-yue
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摘要: 采用数值模拟方法研究了压力能驱动的自搅拌反应器内液相流场的分布规律.首先对标准κ-ε模型、RNG κ-ε模型、realizable κ-ε模型下的模拟结果与PIV实验结果进行对比,确定了合适的湍流模型;然后研究了不同入口压力、液位高度对反应器内流场分布的影响.结果表明:标准κ-ε模型能更精确地模拟该反应器内的流场分布,反应器内流场稳定时间为12s以上.增加入口压力和液位高度均有利于反应器内流体速度均匀分布,入口压力为3MPa时几乎不存在速度死区.

关键词: CFD(计算流体力学), 速度分布, 湍动能, 自搅拌, 管式反应器

Abstract: The distribution of liquid phase flow field in a self-stirring reactor driven by pressure energy was studied by numerical simulation method. Firstly, the appropriate turbulence model was determined by comparing the simulation results of the standard k-ε model, RNG k-ε model, and realizable k-ε model with the PIV experimental results.Then the influence of inlet pressure and liquid level height on the fluid field distribution in the reactor was studied. The results showed that the standard k-ε turbulence model can accurately simulate fluid field distribution of the reactor, and the stable time is more than 12 s. Increasing inlet pressure and liquid height is favorable to the even distribution of fluid velocity in the reactor, and there is almost no dead zone of velocity when inlet pressure is 3MPa.

Key words: CFD(computational fluid dynamics), velocity distribution, turbulent kinetic energy, self-stirring, tubular reactor

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