EFEECTS OF ORIENTATION ANGLE ON RIVER-BED FORMATION USING SUBMERGED SPUR-DIKE GROUPS

• MATSUMOTO Daizo

  名古屋工業大学大学院 工学研究科社会開発工学専攻

• TOMINAGA Akihiro

  名古屋工業大学 工学部社会開発工学科

Bibliographic Information

Other Title

• 越流型水制群を用いた河床変動創出に及ぼす水制設置角度の影響

Abstract

Continuous spur dikes were often used to create diverse river-bed forms. We investigated the effects of the orientation angle of spur dikes on the flow structure and bed formation. Three submerged spur dikes were included in a group structure and they were set on both sidewalls alternately. The velocity distributions were measured and calculated by using a simple 3-D numerical model. Calculated results show a fairly good agreement with the experimental data. The overflow on spur dikes was deflected to the direction normal to the spur-dike line. In upstream-oriented spur-dike groups, large scour holes were observed in front-edge regions of spur dikes and deposition regions were formed beside the sidewalls. In downstream-oriented spur-dike groups, front regions of spur dikes and sidewall regions were largely scoured. These bed forms were created by characteristic 3-D flow structures around submerged spur dikes.

Journal

• PROCEEDINGS OF HYDRAULIC ENGINEERING

  PROCEEDINGS OF HYDRAULIC ENGINEERING 50 1009-1014, 2006

  Japan Society of Civil Engineers

Keywords

• submerged spur dike
• river-bed formation
• 3D flow structure
• local flow orientation angle
• 3D numerical calculation

Details

• CRID: 1390001205169780736
• NII Article ID: 130004043738
• DOI: 10.2208/prohe.50.1009
• ISSN: 18849172
• ISSN: 09167374
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed