检索结果-南通市图书馆

3D mathematical model for suspended load transport by turbulent flows and its applications

Science china(Technological Sciences) 2004年第2期47卷 237-256页

作者： lu yongjun1,dou guoren1,han longxi2,shao xuejun3 & yang xianghua1,3 1.nanjing hydraulic research institute,nanjing 210029,china 2.College of Environmental Engineering of Hohai University,nanjing 210098,china 3.Department of hydraulic Engineering,Tsinghua University,Beijing 100084,china nanjing hydraulic research institute Nanjing China College of Environmental Engineering of Hohai University Nanjing China Department of hydraulic Engineering Tsinghua University Beijing China

This paper presents a 3D mathematical model for suspended load transport in turbulent flows. Based on dous stochastic theory of turbulent flow, numerical schemes of Reynolds stresses for anisotropic turbulent flows were obtained. A refined wall function was employed to treat solid wall boundaries. The equations for 2D suspended load motion and sorting of bed material have been expanded into 3D cases. Numerical results are validated by the measured data of the Gezhouba Project, and proved to be in good agreement with the experimental. The present method has been employed to simulate sediment erosion and deposition in the dam area of Three Gorges Project, and for the operation of the project, siltation process and deposition pattern in the near-dam area of the reservoir, size distribution of the deposits and bed material, and flow fields and sediment concentration fields at different time and elevations are predicted. The predicted results are close to the experimental observations in physical model studies. Thus, a new method is established for 3D simulation of sediment motion in dam areas of multi-purpose water projects.

关键词： turbulent flows, dou's stochastic theory, nonuniform suspended load, riverbed erosion and deposition, 3D mathematical model, Three Gorges Project.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

3D NUMERICAL SIMULATION FOR WATER FLOWS AND SEDIMENT DEPOSITION IN DAM AREA OF THE THREE GORGES PROJECT

3D NUMERICAL SIMULATION FOR WATER FLOWS AND SEDIMENT DEPOSIT...

引用

第九次河流泥沙国际学术大会

作者： yongjun lu and guoren dou nanjing hydraulic research institute nanjing 210029 china.longxi han College of Environmental Engineering of Hohai University nanjing 210098 chinaxuejun shao and xianghua yang Dept. of hydraulic Engineering Tsinghua University Beijing 100084 china

＜正＞This paper applies a 3D mathematical model for suspended load transport in turbulent flows. Based on dou’s stochastic theory of turbulent flows, numerical schemes of Reynolds stresses for anisotropic turbulent flows are obtained. The equations for 2-D suspended load motion and sorting of bed material are expanded into a 3D case. The numerical results were validated by using measurements from the Gezhouba Project with good agreement. The present method is employed to simulate sediment erosion and deposition in the dam area of the Three Gorges Project, and the following predictions are proposed for the operation of the project: deposition process and patterns in the near-dam area of the reservoir;size distribution of the deposits and bed material;and flow fields and sediment concentration fields at different time and elevations. The calculated results are close to the experimental observations in physical models. The proposed method provides a new way for 3D simulation of sediment motion in dam areas of multi-purpose water projects.

关键词： Turbulent flows dou’s stochastic theory Nonuniform suspended load Riverbed erosion and deposition 3D mathematical model Three Gorges Project

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：