Building Morphological Characteristics and Their Effect on the Wind in Beijing  

作　　者：苗世光 李萍阳 王晓云 

机构地区：[1]Institute of Urban Meteorology,China Meteorological Administration [2]National Meteorological Center,China Meteorological Administration [3]Department of Integrated Observations,China Meteorological Administration

出　　处：《Advances in Atmospheric Sciences》2009年第6期1115-1124,共10页大气科学进展（英文版）

基　　金：funded by National Nat-ural Science Foundation of China(Grants Nos.40505002,40652001,and 40775015);Beijing Natural Science Foun-dation(Grant No.8051002);Beijing New Star Project of Science and Technology(Grant No.2005A03);the Ministry of Science and Technology of China(Grant Nos.2008BAC37B04,2006BAJ02A01,and GYHY200906035)

摘　　要：An urban boundary layer model （UBLM） is improved by incorporating the effect of buildings with a sectional drag coefficient and a height-distributed canopy drag length scale. The improved UBLM is applied to simulate the wind fields over three typical urban blocks over the Beijing area with different height-towidth ratios. For comparisons, the wind fields over the same blocks are simulated by an urban sub-domain scale model resolving the buildings explicitly. The wind fields simulated from the two different methods are in good agreement. Then, two-dimensional building morphological characteristics and urban canopy parameters for Beijing are derived from detailed building height data. Finally, experiements are conducted to investigate the effect of buildings on the wind field in Beijing using the improved UBLM.An urban boundary layer model （UBLM） is improved by incorporating the effect of buildings with a sectional drag coefficient and a height-distributed canopy drag length scale. The improved UBLM is applied to simulate the wind fields over three typical urban blocks over the Beijing area with different height-towidth ratios. For comparisons, the wind fields over the same blocks are simulated by an urban sub-domain scale model resolving the buildings explicitly. The wind fields simulated from the two different methods are in good agreement. Then, two-dimensional building morphological characteristics and urban canopy parameters for Beijing are derived from detailed building height data. Finally, experiements are conducted to investigate the effect of buildings on the wind field in Beijing using the improved UBLM.

关 键 词：building morphological characteristics urban boundary layer model urban canopy model 

分 类 号：TU119[建筑科学—建筑理论]