标题：Multiscale Mathematical Model with Discrete-Continuum Transition for Gas-Liquid-Slag Three-Phase Flow in Gas-Stirred Ladles
作者：Li, Linmin; Ding, Wenyang; Xue, Feifei; Xu, Chang; Li, Baokuan
作者机构：[Li, Linmin; Xue, Feifei; Xu, Chang] Hohai Univ, Coll Energy & Elect Engn, Nanjing 211100, Jiangsu, Peoples R China.; [Ding, Wenyang] Shandong Univ, 更多
通讯作者：Li, LM;Li, Linmin
通讯作者地址：[Li, LM]Hohai Univ, Coll Energy & Elect Engn, Nanjing 211100, Jiangsu, Peoples R China.
摘要：Gas-liquid-slag three-phase flow in a gas-stirred ladle is composed of both large-scale interfaces and discrete bubbles, making its modeling and study difficult. In the present work, a discrete-continuum transition model was incorporated into a hybrid Eulerian-Lagrangian model to comprehensively resolve the fluid flow in ladle metallurgy. The volume-of-fluid method was used to capture the large-scale interfaces, while a discrete bubble model was applied to simulate the small bubbles that cannot be resolved using the interface-capturing method. The transition between the small bubbles in Lagrangian coordinates and the large bubbles whose interfaces are captured is included using a newly developed algorithm to further reveal the bubble behaviors. Moreover, the complicated vortex structure is characterized using the large-eddy simulation approach. The present modeling framework enables the most complete analysis of gas-liquid-slag three-phase flow in ladles to date.