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タイトルヨミ
ナカウミ カンタク ボウチョウ スイモン ノ スイリ モケイ ジッケン 1 タンスイ ニオケル DU BUAT コウシキ ノ リュウリョウ ケイスウ μ ノ アタイ ノ ケントウ
日本語以外のタイトル
Hydraulic Model Study on the Tide-gate of Nakaumi Sea Reclamation(I) : Investigation on the Value of Discharge Coeffiient-μ of du Buat's Formula in the Fresh Water
ファイル
言語
日本語
著者
末沢 慶康
豊国 永次
桑野 定美
沢田 敏男
南 勲
高須 俊行
大塚 忠夫
内容記述(抄録等)
In the Nakaumi Sea Reclamation Planning the discharge through tide-gates has been calculated by du Buat's formula, but it is a question whether the value of discharge coefficient given in the formula is entirely applicable to this case. It was to clarify this question positively that a number of hydraulic model experiments were carried out to investigate how the discharge coefficient is influenced by the fresh and the fresh-salt water.
In the case of fresh water the expected results were obtained as follows :
1 . The results obtained under the condition of entirely opened gates indicate that the value of the discharge coefficient μ of du Buat's formula ranges from 0.91 to 1.09. The value of μ hitherto recognized generally changes from 0.6 to 0.95, but judging from these results it seems too small. Especially in the case of larger discharge, it may be estimated to be as large as about 1.0 extending over a wide difference of water level between inside and outside.
2 . The value of the discharge coefficient C of du Buat's formula is not constant in case of partly opened gates in the fresh water, changing according to the amount of water discharge or the difference of water level. Generally it is more than 0.63 on the condition of a submerged weir.
As for the projected hydraulic model study in the fresh-salt water, it is necessary to continue more minute experiments. That will be dealt with in the following report.
掲載誌名
島根農科大学研究報告
12
開始ページ
(A)46
終了ページ
64
ISSN
05598311
発行日
1964-01-10
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
他の一覧