Visualization Study of Bubble Generation and Collapse in He II under Microgravity Condition

被引：6

作者：

Takada, Suguru ^{[1
]}

Kimura, Nobuhiro ^{[2
]}

Mamiya, Mikito ^{[3
]}

Okamura, Takahiro ^{[2
]}

Nozawa, Masakazu ^{[4
]}

Murakami, Masahide ^{[5
]}

机构：

[1] Natl Inst Fus Sci, 322-6 Oroshi Cho, Toki, Gifu 5095292, Japan

[2] High Energy Accelerator Res Org, Oho, Ibaraki 11, Japan

[3] Adv Mfg Res Inst, AIST, Tsukuba 3058565, Japan

[4] Akita Natl Coll Technol, Akita 0118511, Japan

[5] Univ Tsukuba, Tsukuba, Ibaraki 3058573, Japan

来源：

ADVANCES IN CRYOGENIC ENGINEERING | 2014年 / 1573卷

关键词：

Microgravity; Boiling; Condensation; Superfluidity;

D O I：

10.1063/1.4860714

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A visualization experiment to investigate the heat transfer mechanism of He II boiling under microgravity was carried out using the drop-tower which can realize free fall experiments for about 1.3 seconds. The transient behaviors of vapor bubbles around a thin heater wire were optically visualized using a high speed video camera. Time variations of the size of vapor bubble were analyzed. The vapor generation and growth rate were investigated. A vapor bubble collapses slowly when heat current was stopped after generation of a vapor bubble made by a pulsated heat input. In this study, the behavior of bubble shrinking and the growth of vapor column around wire were also compared.

引用

页码：292 / 299

页数：8

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