半透明随形粒子形貌对近场辐射的影响研究  

Analysis on Near Field Radiative Heat Transfer for Surface Morphology of Semitransparent Particles

作　　者：杨柳[1] 艾青[1] 谢鸣[1] 宋奎龙 刘皓佗 YANG Liu;AI Qing;XIE Ming;SONG Kui-Long;LIU Hao-Tuo(Key Laboratory of Aerospace Thermophysics,Ministry of Industry and Information Technology,School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,空天热物理工信部重点实验室,哈尔滨150001

出　　处：《工程热物理学报》2022年第1期206-210,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51776052,No.51676055)。

摘　　要：本文以半透明粒子材料作为研究对象,通过变换粒子表面粗糙度建立了随形粒子近场辐射的传输模型,并引入时域有限差分偶极子法模拟粒子的辐射涨落电流和辐射传热,通过与圆球形粒子的解析解进行对比验证了本方法的正确性,并分析了不同随形粒子间的近场辐射特性。研究结果显示,在谱带1∼10µm范围内,随着粒子表面粗糙度的增大,粒子间辐射当量热导率逐渐下降,粗糙度与圆球形粒子辐射当量热导率的相对偏差在5%以下,影响较小。In this paper,the translucent particle material is taken as the research object,by transforming the surface roughness of particles,near-field radiation transmission models of morphology particles are established.The time-domain finite difference dipole method is introduced to simulate the radiation fluctuation current of particles and radiative heat transfer.The correctness of this method is verified by comparing with the analytical solution of spherical particles,the near-field radiation characteristics between random surface particles are also analyzed.The research results show that in the range of 1∼10µm,as the surface roughness increases,the radiative thermal conductivity gradually decreases,and the relative deviation from the spherical particles is below 5%.

关 键 词：半透明材料 随形粒子 近场辐射 

分 类 号：TK124[动力工程及工程热物理—工程热物理]