On the Influence of Height of Small Rectangular Weirs

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  • 小形四角せきにおけるせきの高さの影響について
  • コガタ ヨンカクセキ ニ オケル セキ ノ タカサ ノ エイキョウ ニ ツイテ

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Abstract

For the rectangular weir made of thin plate, the effects of height of weir D on the coefficient of discharge c have not been revealed yet, Especially for weirs with a height D≒0, there are verv few experimental results. The author, therefore, for the weir with the range height of D≒0∼0.4 m, has carried out experiments of small rectangular weirs of b=0.10 m, these experiments are performed with respect to certain channel of which B=0.722 and B≒0.20 m, "Full Depth Weir" is the name given to the thin-plate rectangular weir having zero height of weir. Experiments on the full depth weir, of which the values b/B are nearly equal to zero, have been performed for various values of b and for wide range of head h (or m=h/b).

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