摘要
本文研究了梯度同位素掺杂平板间近场辐射特性,相较于同位素富集的均匀介质,梯度同位素掺杂介质能够在小间距时增强近场辐射换热并出现内部吸收峰。此外,本文发现了沿厚度方向质量递增的体系随渐变层厚度增加,换热先增强后减弱,而质量递减的体系出现先减弱后增强再减弱的趋势,表现出不同的依赖关系。本工作还揭示了同位素散射的增大能够在较大渐变层厚度时增强换热。本文对同位素工程在热管理中的应用具有一定的指导意义。
This paper investigate the near-field radiation characteristics between gradient isotopedoped plates.In comparison to isotope-enriched homogeneous media,gradient isotope-doped media have been demonstrated to enhance near-field radiative heat transfer and exhibit internal absorption peaks at small gap size.In addition,it is found that for systems with increasing mass along the thickness direction,the heat transfer is first enhanced and then weakened with increasing thickness of the gradient layer.While the systems with decreasing mass along the thickness direction show a tendency of first weakening,then enhancing and then weakening,showing different dependencies.This work also reveals that an increase in isotope scattering can enhance heat transfer at larger gradient layer thicknesses.This paper serves as a guide for the application of isotope engineering in thermal management.
作者
原伟哲
崔贵成
周承隆
易红亮
YUAN Weizhe;CUI Guicheng;ZHOU Chenglong;YI Hongliang(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《工程热物理学报》
北大核心
2026年第1期292-300,共9页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.U22A20210)。
关键词
近场辐射传热
同位素工程
梯度折射率
内部激元
near-field radiation heat transfer
isotope engineer
gradient refractive index
internal polaritons
