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基于掺长理论的淹没柔性植被水流流速分布研究

槐文信 韩杰 曾玉红 安翔 钱忠东

槐文信, 韩杰, 曾玉红, 安翔, 钱忠东. 基于掺长理论的淹没柔性植被水流流速分布研究[J]. 应用数学和力学, 2009, 30(3): 325-332.
引用本文: 槐文信, 韩杰, 曾玉红, 安翔, 钱忠东. 基于掺长理论的淹没柔性植被水流流速分布研究[J]. 应用数学和力学, 2009, 30(3): 325-332.
HUAI Wen-xin, HAN Jie, ZENG Yu-hong, AN Xiang, QIAN Zhong-dong. Study on Velocity Distribution of Flow With Submerged Flexible Vegetations Based on Mixing-Length Approach[J]. Applied Mathematics and Mechanics, 2009, 30(3): 325-332.
Citation: HUAI Wen-xin, HAN Jie, ZENG Yu-hong, AN Xiang, QIAN Zhong-dong. Study on Velocity Distribution of Flow With Submerged Flexible Vegetations Based on Mixing-Length Approach[J]. Applied Mathematics and Mechanics, 2009, 30(3): 325-332.

基于掺长理论的淹没柔性植被水流流速分布研究

基金项目: 国家自然科学基金资助项目(506790615070902550749031)
详细信息
    作者简介:

    槐文信(1963- ),男,陕西乾县人,教授,博士生导师(联系人.Tel:+86-27-68772211;E-mail:wxhuai@whu.edu.cn).

  • 中图分类号: TV133.1

Study on Velocity Distribution of Flow With Submerged Flexible Vegetations Based on Mixing-Length Approach

  • 摘要: 采用PVC薄片对柔性植被进行了模拟,并用三维Micro ADV对淹没柔性植被恒定水流进行了实验测量,获得了水流纵向流速和Reynolds切应力的分布.实验结果表明,淹没柔性植被水流植被层和非植被层的水力特性有显著不同.在非植被层,Reynolds应力为直线分布,而时均流速则符合经典的对数律分布.基于新“河床”的概念,首次提出用河道压缩参数来表示植被对水流的影响,并合理假设了一个新的混合长度公式,由此得到的时均流速公式相比前人的成果有所需参数少、计算简单及实用性强等优点.
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出版历程
  • 收稿日期:  2008-09-03
  • 修回日期:  2008-11-21
  • 刊出日期:  2009-03-15

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