Numerical Simulation of Dripping Behavior of Droplet in Packed Bed Using Particle Method
Numerical Simulation of Dripping Behavior of Droplet in Packed Bed Using Particle Method
复制标题
DOI：
10.2355/isijinternational.52.1565
复制
发表时间：
2012-09
影响因子：
1.8
通讯作者：
T. Kon;S. Natsui;S. Ueda,;R. Inoue;T. Ariyama
中科院分区：
文献类型：
--
作者：
T. Kon;S. Natsui;S. Ueda,;R. Inoue;T. Ariyama
填充层中的液体流动对高炉的生产效率和操作稳定性有很大影响。它由熔体的物理性质和润湿性以及填充床的结构控制。然而，这是一个很难分析的对象，因为熔体的性质和炉内的条件是不均匀的。在本研究中，为了描述熔体的行为，采用质点方法中的MPS方法建立了填充床内液体流动的三维模型。固体表面的液体流动通过优化三相(固、气、液)界面的能量关系来表示。通过实验和计算分析比较了不同物性液体在单个球体表面的流动行为，验证了计算模型的正确性。其次，将该模型应用于填充床中液体滴流的分析，并对包括液体分散和聚结的三维液体流动进行了模拟计算。在本研究中获得的知识中，液体在填充床中迁移的粘度影响液体的速度和流动路径，但对在填充床中保持静止状态的液体的量几乎没有影响。
The liquid flow in the packed bed strongly affects the productivity and operational stability of the blast furnace. It is controlled by the physical properties and wettability of the melt and the structure of the packed bed. However, this is a difficult object of analysis, as melt properties and conditions in the furnace are inhomogeneous. In this research, a three-dimensional model of the liquid flow in a packed bed was constructed using the MPS method, which is one of particle method, in order to express melt behavior. The liquid flow on solid surfaces was expressed by optimizing the relationship of energy at a three-phase (solid, gas, liquid) interface. The appropriateness of the calculation model was verified by analyzing and comparing the behaviors of liquids with different physical properties flowing on the surface of a single sphere experimentally and in calculations. Next, this model was applied to analysis of the flow of liquids dripping in a packed bed, and a simulation was calculated for a three-dimensional liquid flow comprising dispersion and coalescence of the liquid. Among the knowledge obtained in this study, the viscosity of a liquid migrating through a packed bed influences the velocity and flow path of the liquid, but has little effect on the amount of liquid which remains in a static condition in the packed bed.