微重力水电解槽两相热流动与水量分配数值模拟

刘晓天; 吴传嘉; 马鹏; 王双峰; 李明雨; 尹永利

doi:10.11728/cjss2020.03.382

微重力水电解槽两相热流动与水量分配数值模拟

doi: 10.11728/cjss2020.03.382 cstr: 32142.14.cjss2020.03.382

刘晓天^1,2,
吴传嘉^3,4,
马鹏^3,4,
王双峰^3,4,
李明雨¹,
尹永利^2,5

1. 哈尔滨工业大学(深圳)先进焊接与连接国家重点实验室深圳 518055;
2. 深圳市绿航星际太空科技研究院深圳 518055;
3. 中国科学院力学研究所微重力重点实验室北京 100190;
4. 中国科学院大学工程科学学院北京 100049;
5. 中国航天员科研训练中心人因工程重点实验室北京 100094

基金项目:

广东省省级科技计划项目资助（2017B010122001）

详细信息

作者简介:

刘晓天,E-mail:xiaotianlll@163.com

中图分类号: V524
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出版历程
- 收稿日期: 2020-02-25
- 修回日期: 2020-04-09
- 刊出日期: 2020-05-15

Numerical Simulation of Two-phase Heat Flow and Water Distribution for Water Electrolyzer in Microgravity

1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology at Shenzhen, Shenzhen 518055;
2. Space Science and Technology Institute, Shenzhen 518055;
3. Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190;
4. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049;
5. National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing 100094

摘要

摘要: 建立了固体聚合物电解槽单体的三维两相流动模型和电解槽系统供水过程模型，对电解槽的供水、两相流动和温度场特性进行模拟仿真，分析放置方式和微重力环境等因素对其工作性能的影响.电解槽单体的数值模拟结果表明，在微重力条件下或者水平放置时，其内部速度场和温度场都分布均匀.但是采用竖直放置且水平供水方式时，电解生成的氧气在电解槽上部聚集，出现局部缺水现象.对电解槽系统供水过程的数值模拟结果表明，无论在地面还是微重力条件下，电解槽系统的水量分配都是不均匀的.水平放置时，电解槽系统内的电解槽单体进出口水量从底部至顶部先减少后增加；在竖直放置或微重力条件下，水量从其底部至顶部持续增加.
- 水电解技术 /
- 数值模拟 /
- 重力效应 /
- 两相流 /
- 水量分配
Abstract: Water electrolysis technology is a green-hydrogen process, and it is also a critical oxygen filling technology for medium- and long-term manned space missions. To study the effect of gravity on the performance of solid polymer water electrolyzer, the 3D two-phase model and the system model of electrolyzer were established. The water distribution, flow and temperature field were simulated and the effects of microgravity and normal-gravity on the electrolyzer were analyzed. When the electrolyzer placed in microgravity or horizontally, the numerical simulation of the electrolyzer with single-cell showed that the flow and the temperature fields in the electrolyzer are distributed uniformly. However, when the electrolyzer was placed vertically and water supplied horizontally, the water shortage appeared in the electrolyzer due to the oxygen gathered in the upper part. The numerical simulation of the system model indicated that the water distribution of the system is nonuniform in both normal-gravity and microgravity conditions. When the electrolyzer system was placed horizontally, the system flow rates firstly decrease then increase from the bottom cell to the top cell. While when the electrolyzer system was placed in microgravity or vertically, the system flow rates always increase from the bottom cell to the top cell.
- Water electrolysis /
- Numerical simulation /
- Gravity effect /
- Two-phase flow /
- Water distribution

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参考文献(23)

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