(1. 中南大學 能源科學與工程學院, 長沙 410083;
2. 湘潭大學 機械工程學院, 湘潭 411105)
摘 要: 以商業(yè)CFD軟件CFX4.3為平臺， 采用歐拉-歐拉方法中多流體模型和標準湍流模型， 對156 kA鋁電解槽內(nèi)電解質(zhì)層的氣液兩相流動流場(半槽)進行數(shù)值模擬。 結(jié)果表明： 陽極氣體的推動對鋁電解槽內(nèi)的電解質(zhì)運動起主要作用， 電磁力的影響也較顯著； 電解質(zhì)運動主要是以每個陽極周圍的小循環(huán)為主； 流速較大的區(qū)域主要分布在陽極間縫以及中縫和大面正對陽極間縫處； 陽極氣體的平均流速為0.199 m/s， 最大流速為0.74 m/s； 電解質(zhì)的平均流速為0.079 m/s， 最大流速為0.717 m/s； 陽極以下以及大面和中縫正對陽極間縫處湍流最強。
關(guān)鍵字: 鋁電解槽； 電解質(zhì)； 兩相流動； 數(shù)值模擬
（1. School of Energy Science and Engineering, Central South University,
Changsha 410083, China;
2. Institute of Mechanical Engineering, Xiangtan University,
Xiangtan 411105, China）
Abstract: Based on the commercial CFD software CFX-4.3, the two-phase flow of the electrolyte in the 156 kA aluminum reduction cells was numerically simulated by multi-fluid model and turbulence model. The results indicate that the electrolyte flow is mainly resulted from anode gas, but the influence of electromagnetic force is also prominent. The electrolyte flow form is mainly a local circulation around each anode. The regions of high velocity are located in the anode slots and the center and the side channel at the mouth of the anode slots. The average velocity of the electrolyte is 0.079 m/s, the highest velocity is 0.717 m/s. The average and highest velocity of the gas is 0.199 m/s and 0.74 m/s respectively. The biggest value of turbulence intensity is under anodes and in the center and side channel at the mouth of the anode slots.
Key words: aluminum reduction cells; electrolyte; two-phase flow; numerical simulation
