植被红外特征的多孔介质模拟

计算物理 ›› 2010, Vol. 27 ›› Issue (2): 245-250.

植被红外特征的多孔介质模拟

江利锋, 叶宏

中国科学技术大学热科学和能源工程系, 安徽合肥 230027

收稿日期:2008-11-04 修回日期:2009-06-09 出版日期:2010-03-25 发布日期:2010-03-25
作者简介:江利锋(1982-),男,江苏张家港,博士生,主要从事热控技术方面研究.
基金资助:
国家自然科学基金(批准号:50402009)资助项目

Vegetation Infrared Simulation with Porous Material

JIANG Lifeng, YE Hong

Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, China

Received:2008-11-04 Revised:2009-06-09 Online:2010-03-25 Published:2010-03-25

摘要/Abstract

摘要： 利用流动介质在多孔材料孔隙通道内的渗流和表面蒸发与植物叶片的蒸腾作用相似的原理,设计一种多孔仿真叶片,建立多孔仿真叶片及实际叶片的理论模型,研究孔隙率、仿真叶片厚度、多孔材料固体颗粒的有效直径对仿真叶片表面温度的影响,并比较处于同样环境条件下的植物叶片与仿真叶片表面温度的变化情况,发现厚度0.5 cm,孔隙率0.05,颗粒有效直径2.5 mm的仿真叶片与植物叶片表面温度最接近,全天温差在3℃以内.

关键词: 多孔仿真叶片, 植物叶片, 红外特征模拟

Abstract: Based on comparability of porous material seepage flow and surface evaporation with plant leaf transpiration, a kind of porous material artificial leaf is proposed. Models of artificial leaf and realistic leaf are set. Influence of porosity, thickness and particle diameter of the artificial leaf on surface temperature is discussed. According to simulation under representative ambient conditions, we found that an artificial leaf with thickness of 0.5 cm, porosity of 0.05 and particle diameter of 2.5 mm is able to simulate infrared characteristics of a realistic leaf. Surface temperature difference is within 3℃ in a day.

Key words: porous material, artificial leaf, infrared characteristic simulation

中图分类号:

E919

江利锋, 叶宏. 植被红外特征的多孔介质模拟[J]. 计算物理, 2010, 27(2): 245-250.

JIANG Lifeng, YE Hong. Vegetation Infrared Simulation with Porous Material[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 27(2): 245-250.