(1. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長沙 410083；2. 蘇州新長光熱能科技有限公司，蘇州 215008)
摘 要: 為了更好地研究和優(yōu)化鋁熔煉爐的性能，針對現(xiàn)有的蓄熱式圓形鋁熔煉爐，在建立合理的鋁熔煉爐基本模型的基礎(chǔ)上，通過耦合用戶自定義熔化模型和氧化燒損模型，運(yùn)用計(jì)算流體力學(xué)軟件FLUENT實(shí)現(xiàn)燃燒空間和熔池的耦合物理場的數(shù)值模擬。著重研究不同固液區(qū)和不同孔隙率對鋁及鋁合金熔煉過程的影響。結(jié)果表明，該模型較好地反映鋁熔煉爐的熔煉現(xiàn)象，可運(yùn)用該模型進(jìn)行鋁熔煉爐熔煉過程工藝參數(shù)的優(yōu)化研究。同時(shí)獲得了固液區(qū)和孔隙率對熔煉參數(shù)影響規(guī)律：鋁液溫度在固液區(qū)上升緩慢，而離開固液相線時(shí)，鋁液溫度上升速度加快，爐膛溫度和氧化層質(zhì)量隨著熔煉時(shí)間分別呈周期性增加和呈拋物線增加；隨著氧化層厚度的增加，鋁液溫度隨著孔隙率的增加而增加變得緩慢。
關(guān)鍵字: 蓄熱式鋁熔煉爐；熔煉過程；數(shù)值模擬
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
