水生植物对水沙运动影响的三维湍流模型

刘诚; 沈永明

水生植物对水沙运动影响的三维湍流模型

刘诚^1,2,
沈永明²

1.
珠江水利科学研究院河口海岸动力学研究室, 广东, 广州, 510611;
2.
大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024

基金项目: 国家自然科学基金重点资助项目(50839001);国家重点基础研究发展计划(973)资助项目(2005CB724202)

详细信息

作者简介:
刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

中图分类号: TV142

3D turbulence model for the flow and sediment transport with aquatic vegetation

LIU Cheng^1,2,
SHEN Yong-ming²

1.
Coastal and Estuary Dynamics Section, Pearl River Hydraulic Research Institute, Guangzhou 510611, China;
2.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

Funds: The study is financially supported by the National Natural Science Foundation of China (No.50839001) and the National Basic Research Program of China (No.2005CB724202)

摘要: 水生植物的存在改变了明渠内水流的流动结构,也影响着泥沙的输运。建立三维湍流模型,在水流控制方程中加入植被阻力项和植被密度项来考虑刚性植物对水动力特性和泥沙输运特性的影响。应用该三维数值模型计算了矩形水槽内淹没植被对水流水平时均流速垂向分布的影响、复式明渠边滩栽种挺水植被对水流深度、平均流速分布以及植被岛周围泥沙床面的冲淤变形的影响。数值计算结果与实测结果吻合良好,表明本模型可以有效地描述刚性水生植物对水流泥沙运动的影响。
- 三维湍流模型 /
- 水生植物 /
- 水流结构 /
- 泥沙输运 /
- 悬沙 /
- 床面变形
Abstract: Aquatic vegetation plays an important role in the flow structure in open channels and thus changes the fate and transport of sediment.This paper proposes a 3D turbulence rmdel,introducing vegetation density and drag force to the control equations of water flow with vegetation.The impacts of submerged vegetation on the vertical profiles of horiwntal flow velocities,the changes of the depth-averaged flow velocities in a compound channel with emergent vegetation in the floodplain,and the bed surface topography changes around and in a vegetation island are calculated by the model.The calculated results show a good agreement the with experimental results.
- 3D turbulence model /
- aquatic vegetation /
- flow structure /
- sediment transport /
- suspended sediment /
- bed surface topography change

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水生植物对水沙运动影响的三维湍流模型

作者简介:
刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

3D turbulence model for the flow and sediment transport with aquatic vegetation

计量

水生植物对水沙运动影响的三维湍流模型

1. 珠江水利科学研究院河口海岸动力学研究室, 广东, 广州, 510611;

2. 大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024

作者简介:
刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

English Abstract

3D turbulence model for the flow and sediment transport with aquatic vegetation

1. Coastal and Estuary Dynamics Section, Pearl River Hydraulic Research Institute, Guangzhou 510611, China;

2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

全文HTML

目录

留言板

水生植物对水沙运动影响的三维湍流模型

作者简介: 刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

3D turbulence model for the flow and sediment transport with aquatic vegetation

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出版历程

水生植物对水沙运动影响的三维湍流模型

1. 珠江水利科学研究院河口海岸动力学研究室, 广东, 广州, 510611; 2. 大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024

作者简介: 刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

English Abstract

3D turbulence model for the flow and sediment transport with aquatic vegetation

1. Coastal and Estuary Dynamics Section, Pearl River Hydraulic Research Institute, Guangzhou 510611, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

全文HTML

目录

作者简介:
刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

1. 珠江水利科学研究院河口海岸动力学研究室, 广东, 广州, 510611;

2. 大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024

作者简介:
刘诚(1976- ),男,湖北潜江人,博士研究生,主要从事环境水力学方面的研究.E-mail:jacklc2008@gmail.com

1. Coastal and Estuary Dynamics Section, Pearl River Hydraulic Research Institute, Guangzhou 510611, China;

2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China