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针对3kA稀土Nd电解槽,运用数值模拟软件COMSOL,在阴极、阳极高度以及插入深度一定的情况下,建立电场、热场的耦合模型。通过对稀土电解槽内电-热场耦合前后模拟结果的对比,发现电场在阴阳极之间的分布较耦合前混乱,耦合前后其分布数值存在0.03V的差别;耦合前后热场的分布形态基本一致,温度分布均在阴阳极之间达到最高,但耦合后温度逐渐上移,耦合前后温度出现明显差别,其最高温度相差约24℃。稀土电解槽中这些物理场之间有一定的相互作用,进一步体现了耦合过程的合理性。
For the 3kA rare earth Nd cell, a coupled model of electric field and thermal field was established by using numerical simulation software COMSOL with the cathode, anode height and insertion depth constant. By comparing the simulation results before and after the electric-thermal field coupling in the rare-earth electrolyzer, it is found that the distribution of the electric field between the anode and the cathode is more confusing than that before the coupling. The distribution value of the electric field before and after the coupling has a difference of 0.03V. The temperature distribution reached the maximum between the anode and the cathode, but the temperature gradually increased after the coupling. The temperature before and after the coupling showed obvious difference, and the maximum temperature difference was about 24 ℃. Rare earth electrolyzer in the physical field between a certain interaction, further reflects the rationality of the coupling process.