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应用生态学报 ›› 2003, Vol. ›› Issue (3): 359-362.

• 研究论文 • 上一篇    下一篇

灌草与林带搭配条件下防护效应的数值模拟

王元1,2, 周军莉3, 徐忠1   

  1. 1. 西安交通大学生态环境与现代农业工程中心, 西安 710049;
    2. 中国科学院新疆生态与地理研究所, 乌鲁木齐 830011;
    3. 湖南大学土木工程学院, 长沙 410082
  • 收稿日期:2001-05-10 修回日期:2001-12-23
  • 通讯作者: 王元,男,1956年生,教授,博士生导师,主要从事流体力学工程与环境模拟等方面的教学和研究,发表论文20余篇.E-mail:wangyuan@mail.xjtu.edu.cn.
  • 基金资助:
    国家自然科学基金项目(A020403);中国科学院重大资助项目(KZ951B1213)

Numerical simulation of flow fields through porous windbreak in shrubby zone

WANG Yuan1,2, ZHOU Junli3, XU Zhong1   

  1. 1. The Center for Environment and Modern Agriculture Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    3. College of Civil Engineering, Hunan University, Changsha 410082, China
  • Received:2001-05-10 Revised:2001-12-23

摘要: 在对林带和灌草进行参数化的基础上,将有、无灌草带存在情况下绕林带流场进行了数值模拟,分析比较了两种流场中沿流相对风速、不同断面风速廓线及湍动能的变化.结果表明,灌草在防护林体系中起着重要作用,在林带迎风面和带后一定区域内,均使风速减小.最后将数值模拟结果与实验结果进行了对比,并从实验角度分析了灌草的作用.

关键词: 林带, 灌草带, 数值模拟, 相对风速, 云南浅水湖泊, 海拔, 区域差异, 枝角类, 营养水平

Abstract: By treating the windbreak and shrub with the parameters in a equation, the flow fields through porous windbreak with and without shrub were calculated. The changes in relative wind velocity in horizontal direction, velocity profile and turbulent energy of the section were compared. It is concluded that shrub was very important in windbreak system, which could decrease the wind velocity in front of or some distance in the leeward of the windbreak. The calculated numerical results were compared with the data from wind tunnel experiment where the influence of shrub on flow field was analyzed.

Key words: Windbreak, Shrub, Numerical simulation, Relative velocity, shallow lake, regional heterogeneity., altitude, cladocera, nutrient level

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