| 二维周期性多孔La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3发射率研究 |
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| 引用本文： | 黄金国,宣益民,李强,韩玉阁. 二维周期性多孔La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3发射率研究[J]. 工程热物理学报, 2010, 0(3) |
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| 作者姓名： | 黄金国 宣益民 李强 韩玉阁 |
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| 作者单位： | 南京理工大学动力工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(No.50936002;No.50876044) |
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| 摘 要： | 基于麦克斯韦方程组,利用时域有限差分方法(FDTD)计算了二维周期性多孔钙钛矿型氧化物La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3(LSMZO)的光谱特性,讨论了结构尺寸对光谱特性的影响。计算结果表明,当孔径约比热辐射波长小一个量级时,周期性多孔LSMZO的发射率比块体材料有所提高,这对改善热致变色材料的性能具有一定的指导意义。
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| 关 键 词： | 钙钛矿型氧化物 时域有限差分方法 发射率 |
INVESTIGATION ON THE EMISSIVITY OF TWO-DIMENSIONAL PERIODIC POROUS La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3 |
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| HUANG Jin-Guo XUAN Yi-Min LI Qiang HAN Yu-Ge. INVESTIGATION ON THE EMISSIVITY OF TWO-DIMENSIONAL PERIODIC POROUS La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3[J]. Journal of Engineering Thermophysics, 2010, 0(3) |
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| Authors: | HUANG Jin-Guo XUAN Yi-Min LI Qiang HAN Yu-Ge |
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| Affiliation: | School of Power Engineering;Nanjing University of Science and Technology;Nanjing 210094;China |
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| Abstract: | Spectral characteristics of peroskite-type oxide La_(0.83)Sr_(0.17)Mn_(0.9)Zn_(0.1)O_3(LSMZO) with two-dimensional periodic porous structure were numerically analyzed,by means of the finite-difference time-domain method(FDTD) based on Maxwell's equations.The effects of structural sizes on spectral characteristics were discussed.The results show that when the aperture is one order smaller than thermal radiation wavelength,the surface emissivity of LSMZO is enhanced compared with that of the bulk material,whi... |
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| Keywords: | peroskite-type oxides the finite-difference time-domain method emissivity |
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