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Title
  • ja 急勾配開水路流の流速分布特性
Alternative
  • キュウコウバイ カイスイロリュウ ノ リュウソク ブンプ トクセイ
  • Characteristics of velocity profiles in steep open-channel flows
Creator
    • ja 冨永, 晃宏
    • ja 江崎, 一博
    • ja 藤川, 智仁
Rights
  • Copyright (c) 1990 社団法人 土木学会
Description
  • Other Velocity measurements, using fiber-optic laser-doppler anemometer, were conducted in steep open-channel flows on smooth and incomplete rough beds. Bed slope was changed from 1/500 to 1/25, which covers Froude number from 0.5 to 3. In this condition, the law of the wall and turbulence intensity distribution were examined. The von Karman constant k is probed to universal, but the integral constant A decreases as the bed shear stress becomes larger. This decrease of A can be expressed by the decrease of the damping factor B in the van Driest's mixing length distribution in the near-wall region. Turbulence intensity u' normalized by friction velocity U* decrease of the semi-empirical universal formula with the increase of the bed shear stress, in the same manner as the velocity distribution.
Publisher 社団法人 土木学会
Date
    Created2017-01-23 , Issued1990-02
Language
  • jpn
Resource Type journal article
Version Type VoR
Identifier URI http://id.nii.ac.jp/1476/00004019/
Journal
    • NCID AN10426673
    • ISSN 0916-7374
      • 水工学論文集
      • Volume Number34 Page Start439 Page End444
File
Oaidate 2021-09-10