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波浪作用下柔性草本植物受力特性研究

张小霞 林鹏智

张小霞, 林鹏智. 波浪作用下柔性草本植物受力特性研究[J]. 力学学报, 2021, 53(4): 1018-1027. doi: 10.6052/0459-1879-20-429
引用本文: 张小霞, 林鹏智. 波浪作用下柔性草本植物受力特性研究[J]. 力学学报, 2021, 53(4): 1018-1027. doi: 10.6052/0459-1879-20-429
Zhang Xiaoxia, Lin Pengzhi. WAVE-INDUCED FORCE ON FLEXIBLE MARSH PLANTS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(4): 1018-1027. doi: 10.6052/0459-1879-20-429
Citation: Zhang Xiaoxia, Lin Pengzhi. WAVE-INDUCED FORCE ON FLEXIBLE MARSH PLANTS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(4): 1018-1027. doi: 10.6052/0459-1879-20-429

波浪作用下柔性草本植物受力特性研究

doi: 10.6052/0459-1879-20-429
基金项目: 1)国家自然科学基金(51879237)
详细信息
    作者简介:

    3)林鹏智, 教授, 主要研究方向: 计算流体动力学及其工程应用. E-mail: cvelinpz@scu.edu.cn
    2)张小霞, 博士, 主要研究方向: 环境流体力学及生态减灾. E-mail: zhangxiaoxia@stu.scu.edu.cn;

    通讯作者:

    张小霞

    林鹏智

  • 中图分类号: TV1

WAVE-INDUCED FORCE ON FLEXIBLE MARSH PLANTS

  • 摘要: 草本盐沼植物广泛分布于海岸带形成滨海湿地系统, 这些滨海湿地具有生态、旅游、养殖及减灾等多方面价值. 草本植物的消浪作用在海岸稳固和沿海防灾减灾等方面发挥了重要作用. 已有植物消浪研究通常过度简化, 将植物视为刚性圆柱并依赖于调节经验拖曳力系数来提高预测准确度, 对柔性植物与波浪的相互作用机理研究还很欠缺. 草本植物通常由多片柔性叶片和一根柔性相对较小的杆茎组成. 在波浪作用下, 植物的叶片与杆茎产生不同程度的动态变形以及相互作用, 从而改变波浪与植物间的相对运动速度, 使得柔性植物受力特性十分复杂. 本文采用简单柔性结构物受力尺度定律计算单片叶片和单根杆茎受力, 并用遮蔽系数量化叶片与杆茎间相互作用引起的叶片受力降低程度, 提出了波浪作用下柔性草本植物动态受力计算公式. 与单片叶片、单根杆茎和既有叶片又有杆茎的模型植物及真实植物样本测量受力比较表明, 本文提出的植物受力模型可较好地预测植物最大受力及植物受力随波浪周期的变化情况.

     

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出版历程
  • 收稿日期:  2020-12-15
  • 刊出日期:  2021-04-10

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