4.6 Article

Ground-based investigations on phase-moving phenomenon with space sublimation cooling for lunar exploration missions

期刊

CHINESE JOURNAL OF AERONAUTICS
卷 35, 期 8, 页码 65-74

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.cja.2021.10.0171000-9361

关键词

Lunar vacuum environment; Phase-change flow; Space sublimation cooling; Unsteady phase-moving phenomenon; Visualized ground-based experimental approaches

资金

  1. Beijing Key Laboratory of Space Thermal Control Technology
  2. China Postdoctoral Science Foundation [2020 M671618]

向作者/读者索取更多资源

This paper presents visualized ground-based experimental approaches to study the sublimation cooling process under vacuum conditions, revealing the movement law of the three-phase point and the growth phenomenon of ice-peak and icicle. The results of the visualized experiments provide insights into the sublimation cooling mechanism of water in the sublimator for lunar exploration missions.
The lunar surface is a typical vacuum environment, and its harsh heat rejection conditions bring great challenges to the thermal control technology of the exploration mission. In addition to the radiator, the sublimator is recommended as one of the promising options for heat rejection. The sublimator makes use of water to freeze and sublimate in a porous medium, rejecting heat to the vacuum environment. The complex heat and mass transfer process involves many physical phenomena such as the freezing and sublimation phase change of water in the porous medium and the movement of the phase-change interface. In this paper, the visualized ground-based experimental approaches of space sublimation cooling were presented to reveal the moving law of threephase point and the growth phenomenon of ice-peak and icicle in microchannels under vacuum conditions. The visualized experiments and results prove that the freezing ice is divided into the porous ice-peak and the transparent icicle. As the sublimation progresses, the phase-change interface moves downward steadily, the length of the ice-peak increases, but the icicle decreases. The visualized experiments of space sublimation cooling in the capillary have guiding significance to reveal the sublimation cooling mechanism of water in the sublimator for lunar exploration missions. (c) 2021 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据