球形微粒子近场辐射换热研究

工程热物理学报 , 2004, 25(2): 290-292.

1.清华大学工程力学系,北京,100084

2.清华大学工程力学系,北京,100084

基金项目: 中国博士后科学基金(中博基2003.03号) 国家自然科学基金(59995550)

NEAR-FIELD RADIATIVE HEAT TRANSFER BETWEEN SPHERICAL MICRO PARTICLES

从偶极辐射理论出发,结合普朗克黑体辐射分布,推导出近场区热辐射分布.采用MC法模拟了两个纳米球形粒子的辐射换热,考察相关参数对近场辐射换热的影响.表明其辐射热流可比黑体辐射高8个数量级.其热流随间距的增大急剧减小.本研究对于纳米粒子群的传热研究有积极意义.

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