高棵水生植物的阻力系数在非淹没与淹没条件下的相互换算

顾峰峰; 倪汉根; 戚定满

高棵水生植物的阻力系数在非淹没与淹没条件下的相互换算

1.
上海河口海岸科学研究中心, 上海, 201201;
2.
大连理工大学土木水利学院, 辽宁, 大连, 116024

基金项目: 国家自然科学基金重点项目(50139020);中国近海海洋综合调查与评价908专项PJ9

详细信息

作者简介:
顾峰峰(1978- ),男,上海市人,博士,主要从事水力学及河流动力学研究.E-mail:gufengfeng@yahoo.com.cn

中图分类号: TV131.2;X143
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- 文章访问数: 106
- HTML全文浏览量: 23
- PDF下载量: 537
出版历程
- 收稿日期: 2006-11-12
- 修回日期: 2007-03-11
- 刊出日期: 2007-11-24

Transition of long-stalk vegetation resistance coefficient between unsubmerged condition and submerged condition

1.
Estuary and Coastal Scientific Research Institute of the Ministry of Communication, Shanghai 201201, China;
2.
School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China

Funds: The study is financially supported by the National Natural Science Foundation of China(No.50139020).

摘要

摘要: 通过模型试验测定了渠道中一种高棵、密集分布的植物,在淹没情况下的断面流度分布曲线及糙率和水深关系曲线;根据文献资料假设了植物区内的流速为均匀分布,并预测了非植物区内的流速分布,经过与实测值比较,符合较好;在这个断面流速分布的基础上,通过理论推导,得到了非淹没和淹没情况下糙率系数的换算关系;并给出了用植物模型在非淹没时的糙率系数~水深关系曲线延伸得到淹没时的糙率~水深关系曲线的实例,模型试验的结果也验证了这一换算关系。
- 高棵水生植物 /
- 阻力系数 /
- 流速分布 /
- 淹没 /
- 相互换算
Abstract: The vertical velocity distributions in the vegetated channel and the relationship between resistance coefficient and flow depth were measured in laboratory experiments.Based on the assumption that the velocity in the region with vegetation keeps constant,the velocity distributions above the top of vegetation may be well predicted which closely fit the results of the experiment.And then the relationship between the resistane coefficient and flow depth for the vegetations under the unsubmerged and submerged conditions is deduced theoretically.Finally an example is given that the relationship between n and h for reeds is extended successfully from unsubmerged to submerged condition,and some experimental results approve such a conversion.
- long-stalk vegetation /
- resistance coefficient /
- velocity distribution /
- suberged /
- transition

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参考文献(20)

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高棵水生植物的阻力系数在非淹没与淹没条件下的相互换算

作者简介: 顾峰峰(1978- ),男,上海市人,博士,主要从事水力学及河流动力学研究.E-mail:gufengfeng@yahoo.com.cn

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出版历程

Transition of long-stalk vegetation resistance coefficient between unsubmerged condition and submerged condition

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出版历程

目录

作者简介:
顾峰峰(1978- ),男,上海市人,博士,主要从事水力学及河流动力学研究.E-mail:gufengfeng@yahoo.com.cn