底吹炉喷枪出口处“蘑菇头”对气体行为影响的模拟研究  

Simulation of Gas Behavior Influenced by“Head of Mushroom”on Nozzle on Bottom-Blowing Furnace

作　　者：杨鹏[1] 苏福永[1] 刘训良[1] 温治[1] YANG Peng SU Fu-yong LIU Xun-liang WEN Zhi(School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

机构地区：[1]北京科技大学能源与环境工程学院,北京100083

出　　处：《有色金属（冶炼部分）》2016年第11期1-4,7,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51276015)

摘　　要：依据热量平衡原理,计算得到了某种气体喷吹流量下形成的"蘑菇头"直径为60.2mm。使用商业软件FLUENT将"蘑菇头"区域设置为多孔介质,利用VOF模型模拟了"蘑菇头"存在时气泡的产生、生长、直至破裂的过程。对比没有"蘑菇头"时气泡的变化,模拟发现,"蘑菇头"的存在对流动过程的影响较大。"蘑菇头"的存在使气泡体积与表面积更大,形状更接近球形,且在炉内停留时间更长,有利于炉内气体与熔体的流动与充分反应。Calculated diameter of ＂head of mushroom＂ （HOM） is 60.2 mm with some rate of gas flowing based on thermal balance. Area of HOM was defined as porous media by commercial software FLUENT. Process of formation and growing up until burst of bubbles influenced by porous media was simulated by VOF model. Through comparision with condition without porous media, there is an obvious difference in flowing with existing of porous media according to simulation results. Existing of porous media results in bigger volume and surface area of bubble, which facilitate flowing and reaction of gas sphere-like shape and longer maintance of bubble in furnace, and molten liquid in furnace.

关 键 词：底吹炉 蘑菇头 多孔介质 VOF方法 

分 类 号：TF062[冶金工程—冶金物理化学]