采用数值模拟手段，结合水模型实验，研究了中间包底部吹气过程对中间包内流场及夹杂物传输行为的影响。

The fluid flow and transport process of non metal inclusion in tundish under bottom blowing are studied by numerical simulation and water model experiment.

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研究表明，中间包底部吹气过程可以有效改善钢液的流动状态，消除短路流，增强“气幕墙”区域钢液的混合，并有效促进了夹杂物在中间包内上浮去除。

It was found that gas blowing at the bottom effectively eliminated the short flow, strengthened the mixed flow of gas curtain regions and increased the total inclusion removal rate.

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但人们可能担心直接对陌生人的口部吹气会传染疾病，特别在紧急情况下培训过程容易忘记。

But people may worry about getting sick from blowing into a stranger's mouth. Also, the training is easy to forget, especially during an emergency.

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