Interaction between Argon Gas Bubbles and Solidified Shell
Interaction between Argon Gas Bubbles and Solidified Shell
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DOI：
10.2355/isijinternational.44.682
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发表时间：
2004-04
影响因子：
1.8
通讯作者：
H. Esaka;Yuka Kuroda;K. Shinozuka;M. Tamura
中科院分区：
文献类型：
--
作者：
H. Esaka;Yuka Kuroda;K. Shinozuka;M. Tamura
为了研究气泡与凝固坯壳之间的相互作用，利用透明物质进行了现场观测。用录像机观察和记录了氩气泡的运动。研究了气泡直径、铜板倾角和固液界面形态对气泡截留率的影响。气泡的截留量随气泡直径的减小和铜板倾角的增大而增大。此外，它被发现，气泡的截留增加的固/液界面的粗糙度。考虑到影响气泡的力平衡，建立了一个物理模型。使用这个模型，本实验的结果得到了一致的解释。
In order to investigate the interaction between gas bubbles and solidified shell, in-situ observations using transparent substance have been made. The movement of argon gas bubbles has been observed and recorded by a VTR. The effect of diameter of gas bubbles, the angle of a copper plate and solid/liquid interfacial morphology on the entrapment of gas bubbles have been characterized. The entrapment of bubbles increases with decreasing the diameter of gas bubbles and with increasing the angle of the copper plate. Furthermore, it is found that the entrapment of gas bubbles increases with increasing the roughness of the solid/liquid interface. A physical model has been developed taking the force balance affecting a bubble into account. Using this model, the results of the present experiment have been consistently interpreted.