Contaminated airflows are frequently generated during various liquid-metal pouring processes in industrial plants. An in-depth understanding of the induced airflow characteristics is necessary to develop an energy-saving ventilation system. In this study, the airflow characteristics induced by liquid metal pouring were investigated experimentally. The results indicate that the time-averaged velocity distribution of induced airflow at different pouring heights Z/r’ essentially follow Gaussian curves and that the influence range of the dimensionless horizontal velocity of the induced airflow is 0–2.5 at a Z/r’ of 0 to −3 with the maximum pouring flow rate. The angle Ф between the mainstream movement direction and the horizontal plane is approximately 85° based on the streamline variations. In addition, the temperature attenuation of the induced airflow approximately follows an exponential decay, and the dimensionless horizontal influence range of the temperature is almost four times that of the velocity. Moreover, the air mass formation and contaminated airflow generation process are illustrated, and the temperature peak of the induced airflow at the pouring cup outlet is explained in terms of the air mass generation. By combining the air mass position S* and dimensionless air mass diameter D* variations, it is demonstrated that the polluted airflow generation function is similar to a trigonometric function during the pouring period. In summary, the obtained conclusions can assist in the design of high-efficiency ventilation systems and in reducing energy consumption in industrial plants.

在工业工厂的各种液态金属浇注过程中，经常会产生受污染的气流。深入了解诱导气流特性对于开发节能通风系统是必要的。在这项研究中，通过实验研究了液态金属浇注引起的气流特性。结果表明，不同浇注高度Z/r'诱导气流的时均速度分布基本遵循高斯曲线，诱导气流无量纲水平速度在Z/r'的影响范围为0～2.5 。 0 到 -3 的最大浇注流量。角度Ф根据流线变化，主流运动方向与水平面之间的夹角约为 85°。此外，诱导气流的温度衰减近似呈指数衰减，温度的无量纲水平影响范围几乎是速度的四倍。此外，还说明了气团的形成和污染气流的产生过程，并从气团的产生角度解释了倾倒杯出口处诱导气流的温度峰值。通过组合空气质量位置S*和无量纲空气质量直径D*变化，证明了污染气流产生函数类似于倾倒期间的三角函数。总之，所获得的结论可以帮助设计高效通风系统和降低工业厂房的能耗。