沿海防护林网防风效应数值模拟研究  

Numerical Simulation on Windbreak Effect of Coastal Shelterbelts Nets

作　　者：张雷[1] 董毅[1,2] 虞木奎[1] 吴统贵[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,杭州311400 [2]美国纽约州立大学林业与环境学院,纽约13210

出　　处：《中国农学通报》2015年第28期34-39,共6页Chinese Agricultural Science Bulletin

基　　金：国家林业局948引进项目"沿海防护林风流场数值模拟技术引进"(2015-4-29);浙江省森林生态创新团队项目"沿海防护林防风效益监测与评价"(2011R50027)

摘　　要：为研究沿海防护林网的防风效能,采用计算流体力学软件FLUENT对上海浦东新区的水杉林网周围的气流场分布进行了数值模拟。结果表明:水杉林网对气流有着明显的削弱作用,风速在林带前5 H左右处逐渐下降,在林带后出现回流现象,随后林带对气流的作用逐渐减弱,风速逐渐恢复。各林带的有效防护距离在10 H左右,因此,林网中林带间距设置在15 H左右比较合适。In order to study the windbreak effect of the coastal shelterbelts, the author simulated the airflowfield of the Metasequoia glyptostroboides forest shelterbelts in Pudong New Area, Shanghai, by computationalfluid dynamics（CFD） software-FLUENT. The result showed that the wind speed started to decrease graduallyat the 5 H location windward of shelterbelts, and the back flow appeared behind the shelterbelt. Then the windgradually recovered to the initial speed with the decreasing influence of the shelterbelt. Meanwhile, theeffective sheltering distance of each shelterbelt was almost 10 H in this simulation. Therefore, it was better toset the distance between two shelterbelts to 15 H.

关 键 词：防护林网 数值模拟 计算流体力学 

分 类 号：S727.2[农业科学—林木遗传育种]