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中国农学通报 ›› 2015, Vol. 31 ›› Issue (28): 34-39.doi: 10.11924/j.issn.1000-6850.casb15070014

所属专题: 农业气象

• 林学 园艺 园林 • 上一篇    下一篇

沿海防护林网防风效应数值模拟研究

张 雷1,董 毅1,2,虞木奎1,吴统贵1   

  1. (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)
  • 收稿日期:2015-07-02 修回日期:2015-08-27 接受日期:2015-08-14 出版日期:2015-10-27 发布日期:2015-10-27
  • 通讯作者: 吴统贵
  • 基金资助:
    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)。

Numerical Simulation on Windbreak Effect of Coastal Shelterbelts Nets

Zhang Lei1, Dong Yi1,2, Yu Mukui1, Wu Tonggui1   

  1. (1Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400;2College of Environmental Science and Forestry, State University of New York, Syracuse New York 13210)
  • Received:2015-07-02 Revised:2015-08-27 Accepted:2015-08-14 Online:2015-10-27 Published:2015-10-27

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。

关键词: 气候变化, 气候变化, 可计算一般均衡模型, 粮食生产, 粮食消费, 经济增长

Abstract: In order to study the windbreak effect of the coastal shelterbelts, the author simulated the airflow field of the Metasequoia glyptostroboides forest shelterbelts in Pudong New Area, Shanghai, by computational fluid dynamics (CFD) software-FLUENT. The result showed that the wind speed started to decrease gradually at the 5 H location windward of shelterbelts, and the back flow appeared behind the shelterbelt. Then the wind gradually recovered to the initial speed with the decreasing influence of the shelterbelt. Meanwhile, the effective sheltering distance of each shelterbelt was almost 10 H in this simulation. Therefore, it was better to set the distance between two shelterbelts to 15 H.