Study on three-dimensional mechanisms of flow and sediment transport in open channels with permeable and impermeable spur-dikes

透水与不透水丁坝明渠水流输沙三维机制研究

• 批准号: 21760383
• 负责人: AKAHORI Ryosuke
• 金额: $ 2.41万
• 依托单位: Public Works Research Institute (2010-2011)Tokyo Institute of Technology (2009)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760383/
• 关键词: 水制; 浮遊砂; LES; 粒子的手法; 数値計算; PIV; 浮游砂

The mechanisms of flow structures and sediment transport around spur-dikes were studied in order to extend our knowledge of environmental applications of spur-dike installations. By applying image-analysis methods to experimental results, three-dimensional structures of flow and sediment transport were clarified. The results showed that the wake flow behind permeable dikes and the over-flow on submerged spur-dikes play important roles on sediment suspension. A numerical model of suspended sediment transport that can reproduce sediment concentration profile around permeable dikes was then developed based on the experimental results.

研究了丁坝周围的水流结构和沉积物输送机制，以扩展我们对丁坝装置的环境应用的了解。通过对实验结果应用图像分析方法，阐明了水流和泥沙输运的三维结构。结果表明，透水堤后的尾流和水下丁坝的溢流对泥沙悬浮起着重要作用。然后根据实验结果开发了一个悬浮泥沙输送数值模型，可以重现透水堤周围的泥沙浓度剖面。

项目成果

Numerical calculation of three-dimensional flows in an open channel with a rubble mound groin by using Non-Darcian resistance law

基于非达尔西阻力定律的带碎石丘腹股沟的明渠三维流动数值计算

• 发表时间: 2009
• 期刊: Journal of Hydroscience and Hydraulic Engineering
• 作者: Ryosuke AKAHORI;Kohji MICHIOKU
• 通讯作者: Kohji MICHIOKU

越流型水制周辺での流れ場の構造と浮遊砂輸送

溢流坝周围的流场结构和悬浮泥沙输送

• 发表时间: 2012
• 期刊: 土木学会論文集B1(水工学)
• 作者: 赤堀良介;松尾陽介;吉村千洋
• 通讯作者: 吉村千洋

透過水制群周辺における浮遊砂の輸送に関する研究

渗透水系统悬浮泥沙运移研究

• 发表时间: 2010
• 作者: 赤堀良介;池田駿介;Gu Zu-peng
• 通讯作者: Gu Zu-peng

Study on open channel flow with a submerged structure

水下结构明渠水流研究

• 发表时间: 2009
• 作者: Ryosuke AKAHORI;Yosuke MATSUO;Syunsuke IKEDA
• 通讯作者: Syunsuke IKEDA

上記の雑誌論文は上記発表実績内の第56回水工学講演会に対する講演論文集である

上述期刊文章为第56届水利工程会议演讲论文集，收录于上述刊物中。