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Title
  • ja 湾曲部の流れ構造と河床形状に及ぼす樹木群配置の影響
Alternative
  • ワンキョクブ　ノ　ナガレ　コウゾウ　ト　カショウ　ケイジョウ　ニオヨボス　ジュモクグン　ハイチ　ノ　エイキョウ
  • Effects of vegetated area on flow structure and bed configuration in river bends
Creator
    • ja 冨永, 晃宏
    • ja 長尾, 正志
    • ja 木村, 聡洋
Rights
  • Copyright (c) 1999 社団法人 土木学会
Description
  • Other Vegetation in a river may affect the 3-D flow structures and can control the local scour and accumulation in curved open channels. In this study, three-dimensional mean flow structures were measured in a curved open channel with various vegetation arrangements. Furthermore, experiments were conducted in a movable bed and the effects of vegetation on the local scour were examined. The secondary flow is generated only in the region outside the vegetation zones and the lateral scale of the vortex structures in bends are reduced. The main flow indicates complicated behaviors affected by the strong lateral shear, centrifugal force and momentum transport by the secondary flow. In movable beds, the secondary flow develops fast and becomes about 1.5 times larger than that in fixed beds. The vegetation changes the bed configuration through the change of mean velocity field.
Publisher 社団法人　土木学会
Date
    Created2017-01-24 , Issued1999-02
Language
  • jpn
Resource Type journal article
Version Type VoR
Identifier URI http://id.nii.ac.jp/1476/00004662/
Journal
    • NCID AN10426673
    • ISSN 0916-7374
      • 水工学論文集
      • Volume Number43 Page Start809 Page End814
File
Oaidate 2021-09-10