(中南大學(xué) 冶金與環(huán)境學(xué)院，長(zhǎng)沙 410083)
摘 要: 指出廣泛使用的鋁電解槽電-熱場(chǎng)分離的計(jì)算方法和電-熱場(chǎng)弱耦合計(jì)算方法的理論缺陷，提出一種電-熱場(chǎng)強(qiáng)耦合計(jì)算模型。以某420 kA鋁電解槽為對(duì)象，同時(shí)應(yīng)用強(qiáng)耦合模型與傳統(tǒng)的弱耦合模型對(duì)其電-熱場(chǎng)進(jìn)行計(jì)算，計(jì)算結(jié)果證明了在電-熱場(chǎng)分析中采用強(qiáng)耦合模型的必要性。研究結(jié)果表明：不設(shè)定熔體溫度是電場(chǎng)和熱場(chǎng)實(shí)現(xiàn)強(qiáng)耦合的關(guān)鍵，對(duì)槽內(nèi)各熱源進(jìn)行準(zhǔn)確描述并引入計(jì)算模型中是獲得可靠的鋁電解槽電-熱場(chǎng)分布的必要條件。
關(guān)鍵字: 鋁電解槽；電-熱場(chǎng)；強(qiáng)耦合；熱源分布
（School of Metallurgy and Environment, Central South University, Changsha 410083, China）
Abstract:The theoretical defects of the widely adopted separation calculation method and weakly coupled calculation methods for the thermal-electrical field in aluminium reduction cells were pointed out, and a strongly coupled model of thermal-electrical field was presented. The thermal-electrical field of a 420 kA aluminium reduction cell was computed by using the strongly coupled model and the conventional weakly coupled model, respectively, and the results of this comparative computation prove that adopting the strongly coupled model is necessary. The results show that not setting the temperature of the melt is the key to realize the strong coupling of the electrical field and thermal field, and that introducing the each heat source, which are exactly described, into the calculation model is requirement for obtaining the reliable distribution of the thermal-electrical field.
Key words: aluminium reduction cell; thermal-electrical field; strong coupling; heat source distribution
