| 强磁场和电场作用下的液态金属飞溅抑制的实验研究 |
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| 作者姓名： | 李粲 王增辉 贾潇 倪明玖 |
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| 作者单位： | 中国科学院大学工程科学学院, 北京 100049 |
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| 基金项目： | 国家自然科学基金（51476162）和973ITER项目（2013GB114001）资助 |
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| 摘 要： | 液态金属作为聚变堆中的液态第一壁，在强环形磁场与等离子体电流的共同作用下，产生指向等离子体的电磁力，发生不可控的金属液滴飞溅现象，严重威胁聚变堆的安全性和稳定性。使用一种毛细槽道结构，它不仅可以增大液态金属与壁面的接触面积，使黏附力增大；而且它会大大削减润湿阻力和电磁力的作用，达到抑制飞溅的效果。液态金属表面的稳定性，可通过提高表面的润湿性以及表面结构的合理选择来改善。本实验分析毛细槽道结构抑制液态金属飞溅的原理和效果，并研究飞溅过程中表面结构对抑制效果的影响。
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| 关 键 词： | 液态金属 飞溅 抑制 磁场 电场 |
| 收稿时间： | 2017-01-11 |
| 修稿时间： | 2017-04-28 |
Experimental study on suppression of liquid metal splashing in high magnetic field and electric field |
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| Authors: | LI Can WANG Zenghui JIA Xiao NI Mingjiu |
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| Institution: | College of Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The liquid metal, as the liquid first wall in the reactor, together with the high toroidal magnetic field, is propelled by electrodynamic force, which would cause the liquid metal free surface splashing and threaten the security and stability of the fusion reactor. In this paper, we use the capillary porous channel structure. It increases the contact area of the liquid metal with the wall, so that adhesion increases. It has an additional surface tension, which greatly reduces the wetting resistance and electromagnetic force, achieving the effect of suppression of splash. Liquid metal surface control can be improved by enhancement of surface wettability and the proper choice of liquid metal surface structure. The experiments are carried out in order to understand the causes and consequences of ejected liquid metal as well as to investigate the effects of surface structures on the ejection process. |
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| Keywords: | liquid metal splashing suppression magnetic field electric field |
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