A computational fluid dynamics model was developed to study momentum transfer from the plasma arc jet to the slag bath in a direct-current (DC) ilmenite smelting furnace. The arc was approximated with a steady-state turbulent gas jet that had a thrust equivalent to that of an arc. First, a sensitivity study was performed to understand the analogous turbulent gas jet chosen to represent the arc. Then, the turbulent gas jet representation was used to determine steady-state slag bath flow properties as a result of arc impingement. Lastly, to gauge the relative importance of arc impingement as a momentum source, the contributions of different momentum sources in a DC arc furnace were compared, including electromagnetic and buoyancy forces.

开发了计算流体动力学模型来研究从等离子弧射流到直流 (DC) 钛铁矿熔炼炉中的渣浴的动量传递。电弧近似于具有相当于电弧推力的稳态湍流气体射流。首先，进行了敏感性研究以了解选择来代表电弧的类似湍流气体射流。然后，湍流气体射流表示被用于确定由于电弧冲击而导致的稳态渣熔池流动特性。最后，为了衡量电弧冲击作为动量源的相对重要性，比较了直流电弧炉中不同动量源的贡献，包括电磁力和浮力。