Subcritical 90° Equal-Width Open-Channel Dividing Flow
學年 90
學期 2
出版(發表)日期 2002-07-01
作品名稱 Subcritical 90° Equal-Width Open-Channel Dividing Flow
著者 Hsu, C.C.; Tang C.J.; Lee W.J.; Shieh, M.Y.
著錄名稱、卷期、頁數 Journal of Hydraulic Engineering 128(7), p.716-720
摘要 Based on experimental observations, for a subcritical, right-angled, equal-width, open-channel dividing flow over a horizontal bed, the contraction coefficient at the maximum width-contracted section in the recirculation region is almost inversely related to the main channel upstream-to-downstream discharge ratio. The energy heads upstream and downstream of the division in the main channel are found to be almost equal. Under the assumption that the velocities are nearly uniformly distributed at the considered boundaries, the depth-discharge relationship follows the commonly used energy equation. The predicted results correlate fairly with the experimental data from this and other studies. The energy-loss coefficient of a division is expressed in terms of discharge ratio, upstream Froude number, and depth ratio. An expression for practical engineering applications is to determine the maximum possible branch-channel discharge at a given upstream discharge with a prescribed downstream Froude number or the maximum possible downstream Froude number if both branch- and main-channel discharges are prescribed.
關鍵字 Open channel flow;Water discharge;Contraction;Froude number
語言 en_US
ISSN 0733-9429
期刊性質 國外
通訊作者 Hsu, C.C.
國別 TWN
出版型式 ,紙本

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