铜锍转炉中气液两相流动的数值模拟

采用流体体积方法对铜锍转炉熔池内造铜期吹炼过程中气液两相流动进行单喷嘴数值模拟，研究了气体喷入熔体时的喷流运动现象和性质、气流穿透距离、风口压力变化、风口侧壁面剪切应力分布和气含率分布规律. 结果表明，气泡连续产生和分离是风口处气体的运动形式，气流穿透距离约为风口内径的3.6倍，风口处脉冲压力的形成周期为0.2 s，持续时间约为0.04 s；风口侧壁面剪切应力较大的区域集中在风口附近及其上方壁面；风口以上气含率随熔体高度增加而增加，在靠近自由液面处约为21%，部分模拟结果与文献报道和实际生产情况吻合.

Numerical Simulation of Gas-Liquid Two-phase Flow in a Copper Matte Converter

The gas-liquid two-phase flow in Pierce-Smith (PS) converter with single nozzle for copper smelting was simulated by the volume of fluid model, the jetting phenomena of gas injected into melt, gas penetration distance, pressure variation at the tuyere exit, and wall shear stress and gas holdup distributions were studied. The results show that the motion of gas flow at the tuyere exit has the forms of continuous generation and separation of bubbles. The gas penetration distance is about 3.6 times of the diameter of tuyere. The periodical formation time of pulse pressure is about 0.2 s, and the duration time about 0.04 s. The region with bigger wall shear stress is around and above the tuyere. The gas holdup increases with increasing of the melt height, and it has the value of 21% near the fluid free surface, partial simulation results agree with the data reported in the literature and industrial practice.