论文部分内容阅读
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.
A single nozzle numerical simulation of gas-liquid two-phase flow in copper matte converter copper bath during blowing process was carried out by using the fluid volume method. The phenomena and properties of the jet flow, the airflow penetration distance, Pressure distribution, shear stress distribution and gas holdup distribution on the side wall of the tuyere.The results show that the continuous generation and separation of gas bubbles is the movement of the gas at the tuyere, and the penetration distance of the gas flow is about 3.6 times the inner diameter of the tuyere, and the pulse pressure at the tuyere The period of 0.2 s and the duration of about 0.04 s. The area where the shear stress on the sidewall of the tuyere is large concentrates near the tuyere and above the wall. The gas holdup above the tuyere increases with the increase of the melt height. About 21%, some of the simulation results reported in the literature and the actual production conditions.