欢迎访问过程工程学报, 今天是

›› 2005, Vol. 5 ›› Issue (4): 370-374.

• 流动与传递 • 上一篇    下一篇

铁水连续预处理涡流反应器内液固两相流动特征的数值模拟

刘向军,石洪志,温治,冯俊小,刘双科,尹小东,王妍   

  1. 北京科技大学热能工程系
  • 出版日期:2005-08-20 发布日期:2005-08-20

Numerical Simulation of the Two-phase Flow in a Swirling-reactor for Continuous Pretreament of Molten Metal

LIU Xiang-jun,SHI Hong-zhi ,WEN Zhi,FENG Jun-xiao,LIU Shuang-ke,YIN Xiao-dong,WANG Yan   

  1. University of Science and Technology
  • Online:2005-08-20 Published:2005-08-20

摘要: 铁水预处理技术中反应器的设计至关重要. 采用k-e湍流模型与颗粒随机轨道模型相结合的两相流动模型,数值模拟了涡流反应器内铁水、反应剂的两相流动特征. 计算结果表明,选取本研究所用的反应器几何参数和运行参数,反应剂颗粒能有效地加入铁水中,与铁水较好混合,可达到设想的加料、混合、进而进行化学反应的效果.

关键词: 铁水预处理, 涡流反应器, 两相流动, 数值模拟

Abstract: A novel continuous molten-metal pretreament technology using swirling-reactors is recently proposed by Japanese Scientists. Reactor designing is a key problem for developing and applying this technology. Detailed information about the flow process in a reactor is then very necessory. In this paper, a mathematical model for numerically simulating two-phase molten-metal and particle flow is established. The models used include the k-e two-equation model for turbulent molten-metal flow and the random trajectory model for particle flow. The governing equations are solved by SIMPLER algorithm. The two-phase flow characteristics in a swirling-reactor are numerically studied. Detailed flow field of the molten metal and moving behavior of the particles in the reactor are obtained. Calculated results show that particles can be effectively dropped into molten metal flow using this type swirling-reactor. Particles and molten metal could be mixed well when adopting proper geometrical parameters and operating conditions. These results offer detailed scientific basis for designing and optimizing the hot metal pre-treatment technology.

Key words: molten-metal pretreatment, swirling-reactor, two-phase flow, numerical simulation