| 引用本文: | 邢宝玉,刘昆,黄敏超,等.太阳能热推力器二次聚光器再生冷却过程.[J].国防科技大学学报,2013,35(6):31-36.[点击复制] |
| XING Baoyu,LIU Kun,HUANG Minchao,et al.Thermal analysis of refractive secondary concentrator of solar thermal thruster based on regenerative cooling[J].Journal of National University of Defense Technology,2013,35(6):31-36[点击复制] |
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| 太阳能热推力器二次聚光器再生冷却过程 |
| 邢宝玉, 刘昆, 黄敏超, 程谋森 |
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(国防科技大学 航天科学与工程学院, 湖南 长沙 410073)
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| 摘要: |
| 为克服太阳能热推力器折射式二次聚光器容易破裂的缺点，本文采用再生冷却技术，对二次聚光器与推力室进行了一体化设计，并对该过程进行了流动与传热仿真。仿真结果表明，该设计可有效地降低聚光器的工作温度至1600K以下，热应力分析表明可有效降低其破裂的可能性。同时该设计可预热推进剂至500K以上，提高了系统的能量利用效率。通过进一步对吸收腔内的热辐射分析发现，工质流动对吸收腔壁温影响较小，吸收腔壁面仍然可以维持2400～2600K的高温。 |
| 关键词: 太阳能热推进 折射式二次聚光器 再生冷却 数值仿真 |
| DOI： |
| 投稿日期：2013-05-09 |
| 基金项目:国家部委资助项目 |
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| Thermal analysis of refractive secondary concentrator of solar thermal thruster based on regenerative cooling |
| XING Baoyu, LIU Kun, HUANG Minchao, CHENG Mousen |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Solar thermal propulsion is a high efficiency propulsion system, utilizing concentrated sunlight radiation to heat low molecular weight working fluid and providing high specific impulse. With regenerative cooling, an integration of the second concentrator and thruster can cool down the former to 1600K and preheat the propellant to 600K, thus improving the energy conversion efficiency of the propulsion system. The thermal radiation simulation shows that the flowing propellant is of little influence on the cavity temperature and the cavity can maintain high temperature between 2400K and 2600K. |
| Keywords: solar thermal propulsion refractive secondary concentrator regenerative cooling simulation |
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