电子发汗冷却技术及其研究进展
ELECTRON TRANSPIRATION COOLING TECHNOLOGY AND ITS RESEARCH PROGRESS
苑朝凯 1王春 1姜宗林1
作者信息
- 1. 中国科学院力学研究所,北京 100190
- 折叠
摘要
电子发汗冷却是一种新型的高超声速主动热防护技术,利用材料的热电子发射效应,通过热电子将热载荷转移至流场下游,降低了尖前缘结构热流密度峰值和梯度,为高超飞行器尖前缘结构热防护系统设计提供了新的思路.作为一种潜在的冷却技术,文章主要介绍了电子发汗冷却的工作原理、技术特点,综述了国内外相关研究进展,并对未来发展需解决的关键问题进行了讨论.
Abstract
Electron transpiration cooling is a new type of hypersonic active thermal protection technology that utilizes the thermionic emission effect of materials.The thermal load is transferred to the downstream of the flow field by the emitted electrons,reducing the peak value and gradient of the heat flux.The electron transpiration cooling will open door to hypersonic thermal protection system designs previously unattainable.As a potential cooling technology,the working principle and technical characteristics were introduced in detail in this paper.Also,research progresses on electron transpiration cooling were reviewed and key issues needed to be addressed for further development were discussed.
关键词
热电子效应/发汗冷却/主动冷却/热防护/高超声速Key words
thermionic emission effect/transpiration cooling/active cooling/thermal protection/hypersonic引用本文复制引用
出版年
2024
NETL
NSTL
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