Characteristics of free-surface wave on high-speed liquid lithium jet for IFMIF
Characteristics of free-surface wave on high-speed liquid lithium jet for IFMIF
复制标题
IFMIF高速液态锂射流自由表面波特性
DOI：
10.1016/j.jnucmat.2010.12.275
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发表时间：
2011
影响因子：
3.1
通讯作者：
H. Horiike
中科院分区：
文献类型：
--
作者：
T. Kanemura;S. Yoshihashi;H. Kondo;H. Sugiura;N. Yamaoka;M. Ida;H. Nakamura;I. Matsushita;T. Muroga;H. Horiike
在大阪大学国际聚变材料辐照设施（IFMIF）的锂循环回路中检查了高速液态锂壁射流上的表面波特性。表面波动由喷嘴出口下游 175mm 处的接触式液位传感器测量，该传感器对应于 IFMIF 中的氘核束轴，并用高速视频 (HSV) 相机观察。观测和测量结果均表明，地表涨落由不同尺度的湍流涨落组成。测量结果尤其与湍流间歇理论之一的对数正态分布表现出良好的一致性。发现主波长随着流速的增加而变短，在流速为 15m/s 时达到约 4mm，这与肉眼观察到的波长非常吻合。
The characteristics of the surface waves on a high-speed liquid lithium wall jet were examined in a Li circulation loop at Osaka University for the International Fusion Materials Irradiation Facility (IFMIF). Surface fluctuations were measured by a contact-type liquid level sensor at 175mm downstream from the nozzle exit, which corresponds to the deuteron beam’s axis in the IFMIF, and observed with a high-speed video (HSV) camera. Both the observation and measurement results indicated that the surface fluctuations were composed of various scale turbulent fluctuations. The measurement results especially showed good agreement with the log-normal distribution which is one of the turbulent intermittency theories. The dominant wavelength was found to be shorter with increase in the flow velocity, and reached approximately 4mm at the velocity of 15m/s, which gave close agreement with the visually observed wavelength.