(1. 中南大学 能源科学与工程学院，长沙 410083；2. 苏州新长光热能科技有限公司，苏州 215008)
摘 要: 为了更好地研究和优化铝熔炼炉的性能，针对现有的蓄热式圆形铝熔炼炉，在建立合理的铝熔炼炉基本模型的基础上，通过耦合用户自定义熔化模型和氧化烧损模型，运用计算流体力学软件FLUENT实现燃烧空间和熔池的耦合物理场的数值模拟。着重研究不同固液区和不同孔隙率对铝及铝合金熔炼过程的影响。结果表明，该模型较好地反映铝熔炼炉的熔炼现象，可运用该模型进行铝熔炼炉熔炼过程工艺参数的优化研究。同时获得了固液区和孔隙率对熔炼参数影响规律：铝液温度在固液区上升缓慢，而离开固液相线时，铝液温度上升速度加快，炉膛温度和氧化层质量随着熔炼时间分别呈周期性增加和呈抛物线增加；随着氧化层厚度的增加，铝液温度随着孔隙率的增加而增加变得缓慢。
关键字: 蓄热式铝熔炼炉；熔炼过程；数值模拟
regenerative aluminum melting furnace
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Suzhou Longray Thermal Technology Co. Ltd., Suzhou 215008, China）
Abstract:In order to better research and optimize the performance of aluminum melting furnace, based on reasonable model with user-defined melting model and oxidation loss model, a numerical simulation of coupling field between combustion space and aluminum bath in regenerative round aluminum melting furnace was presented using CFD software FLUENT. The effects of solid-liquid zone and porosity on melting process were described in details. The results show that the model reveals the melting phenomenon of the furnace better. The optimization of parameters for aluminum melting furnace can be studied by the above model. The effect rules of solid-liquid zone and porosity on melting parameters are obtained: The aluminum temperature increases slowly with melting time in solid-liquid zone, but increases fast when leaving solid-liquid phase lines. The furnace temperature and oxide mass increases with melting time periodically and parabolically, respectively. As the oxide thickness increases, the aluminum temperature increasing becomes slow with the increase of porosity.
Key words: regenerative aluminum melting furnace; melting process; numerical simulation
