Near Field Radiative Heat Transfer between Parallel Plates w

发布时间：2022-01-19 11:55

　　当高温和低温热源的间距小于热辐射特征波长时,辐射换热特性发生很大变化,此时电磁波的干涉效应和光子隧穿效应尤为显著。经典的宏观辐射传输理论基于几何光学,忽略了光的干涉效应。目前的研究结果表明,间距为纳米尺度的辐射换热量比斯忒潘·玻尔兹曼定律的预测值高出约5⁶个数量级。本文结合有效介质理论,分析了具有梯度折射率的各向异性多层平行平板结构的近场辐射换热。利用此方法,本文以碳化硅、二氧化硅和铝为对象,分析了不同结构（如平面-粗糙表面、粗糙表面-粗糙表面）的近场辐射换热,并与平行平板结构作对比。以涨落耗散理论为基础,结合麦克斯韦方程组和并矢格林函数,近场辐射换热热流得以求解。借助各平板的表面导纳,可以求解每个交界面上的s偏振和p偏振的反射系数和折射系数。为了验证计算结果的准确性,本文对各向异性多层介质间的近场热流作了收敛性检验。研究结果表明,由于粗糙效应的影响,碳化硅和二氧化硅粗糙表面间的近场换热得到加强,而铝粗糙表面的近场换热被微弱抑制。除粗糙表面平行平板结构之外,本文还计算了粗糙表面-平板之间的近场换热。研究发现,二氧化硅粗糙表面-平板结构的近场换热略强于粗糙表面之间。... 

【文章来源】：哈尔滨工业大学黑龙江省 211工程院校 985工程院校

【文章页数】：84 页

【学位级别】：硕士

【文章目录】：
Abstract
摘要
Nomenclature
Chapter 1.Introduction
    1.1.Research background and significance
    1.2.Recent research in near-field radiative heat transfer
        1.2.1.Radiative heat transfer between nanoparticles
        1.2.2.Near-field radiative heat transfer between nanoparticles and semi-infinite media
        1.2.3.Near-field radiation heat transfer between parallel plates
        1.2.4.Near-field radiation heat transfer and its applications
    1.3.Outline
Chapter 2.Fundamentals and Theoretical Background of Near Field Radiative Heat Transfer
    2.1.Electromagnetic surface waves
        2.1.1.Surface plasmon and phonon polaritons
        2.1.2.Evanescent wave
    2.2.Fluctuation dissipation theory
    2.3.Maxwell's equations and dyadic green's functions
    2.4.Dielectric function model
        2.4.1.Drude model for metals and semiconductors
        2.4.2.Lorentz model for dielectrics
    2.5.Summary
Chapter 3.Near Field Radiative Heat Transfer Between Parallel Plates with Flat Surface
    3.1.Local density of electromagnetic state
    3.2.Near-field radiation between two semi-infinite media
        3.2.1.Influence of temperature and gap distance between plates in NFRHT
        3.2.2.Propagation and evanescent waves in radiative heat transfer
    3.3.Radiative heat transfer coefficients of parallel plate systems
    3.4.Anisotropic optics in thin films
    3.5.Validation of proposed method
        3.5.1.Three layer Structure: Air/Si NWs/Si Substrate
        3.5.2.Four layer structure: Air/D-Si NWs/Si Substrate/Air
        3.5.3.Hyperbolic Metamaterials
    3.6.Anisotropic multi-layer coupling
        3.6.1.Characteristics of anisotropic multi-layer structure
    3.7.Summary
Chapter 4.Near Field Radiative Heat Transfer Between Parallel Plates with Rough Surface
    4.1.Effective medium theory
    4.2.Geometry of random rough surface
    4.3.Characteristics of radiative heat transfer with rough surface
        4.3.1.Convergence test for anisotropic multilayer structure
        4.3.2.LDOS of flat and rough surface material
        4.3.3.Near-field radiative heat transfer between different surface material
        4.3.4.Radiative heat transfer as a function of vacuum gap for different surfaces
    4.4.Summary
Conclusion
结论
References
Acknowledgement


【参考文献】：
期刊论文
[1]隔热板对近场辐射影响的研究[J]. 谷伟,唐桂华,陶文铨.  工程热物理学报. 2014(01)
[2]球形粒子的近场辐射换热研究[J]. 韩茂华,梁新刚.  工程热物理学报. 2007(01)
[3]球形微粒子近场辐射换热研究[J]. 黄勇,梁新刚.  工程热物理学报. 2004(02)



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