使用高速摄像仪采集了板坯连铸结晶器水模内气泡运动的图像,对图像进行了数字处理.结果表明,含气率在结晶器流场内上回流区和射流区呈现"L",形分布;在下回流区呈"V"形分布.本实验条件下气泡的算术平均直径为2.6 mm,不同气量对气泡大小分布几乎没有影响.分区域讨论气泡的表观速度分布比全流场研究更加合适.
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