物理学报Issue(17)：1-8,8.DOI:10.7498/aps.63.170507
圆柱形热集中器理论、仿真和实现
Cylindrical thermal concentrator：theory, simulation, and implement
摘要
Abstract
As a kind of ultra-efficient thermal energy harvesting cell, thermal concentrator has recently attracted great attention from researchers. An analytical expression which describes the temperature distribution in the concentrator is deduced from the heat conduction equation and coordinate transformation relations. The expression is validated by numerical experiments based on COMSOL. Influence of the anisotropy due to cladding and device geometry on the performance of the thermal concentrator is analyzed. It is demonstrated that the greater the anisotropy, the better the thermal concentration effect. Besides, increasing the aspect ratio between the cladding and the core radius also gives rise to a better performance. Based on the temperature distribution relations between the core and the background region, we further explore a method to practically realize such a thermal concentrator by using naturally available materials. It is suggested that different levels of thermal concentration can be achieved by arranging alternately two isotropic conductivities along the azimuth direction and tuning their thermal localizations respectively.关键词
热集中器/坐标变换/解析解/天然材料Key words
thermal concentrator/coordinate transformation/analytical expression/natural materials引用本文复制引用
毛福春,李廷华,黄铭,杨晶晶,贾邦婕..圆柱形热集中器理论、仿真和实现[J].物理学报,2014,(17):1-8,8.基金项目
国家自然科学基金(批准号:61161007,61261002)、云南省自然科学基金重点项目(批准号:2013FA006)和云南省自然科学基金(批准号:2011FB018)资助的课题 （批准号:61161007,61261002）
