摘要
针对城市地面对天空热辐射角系数问题求解的复杂性,介绍了一种从天空向地面逆向分析的求解方法,即假定天空有均匀分布的光源,每个光源均在地面形成建筑阴影,统计地面任何一点对天空可见光源的数量,并求得与总光源数的比值,以此来代表地面对天空的辐射角系数.该方法克服了周围建筑布局、高度和形状等因素的影响,实现了对任何复杂的建筑区域,能快速地计算出该区域地面对天空的热辐射角系数.通过实例求解,证明了该算法的可靠性.
Solution on configuration factor from ground to sky is introduced. The method is based on the converse analysis from sky to ground assuming that light sources are distributed in sky and each light source forms shadow. The ratio between lights sources that can be seen and total light sources is the configuration factor. The solution overcomes the complexity of building arrangement, height and form etc. , and can be used to solve the configuration factor in any complicated architectural complex. It has been proved valid through the example solution.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第2期86-89,共4页
Journal of Chongqing University
基金
国家科技部"十五"攻关资助项目(2003BA8008A15)
英国外交部的全球机遇基金资助项目(FC0-2H176K)
关键词
热辐射角系数
城市热岛
城市热环境
configuration factor
heat island
city thermal environment
