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題名 | Discharge Distribution in Compound Channels=複合式渠道之流量分佈 |
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作 者 | Al-khatib,Issam A.; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷期 | 22:5 1998.09[民87.09] |
頁次 | 頁591-599 |
分類號 | 443 |
關鍵詞 | 複合式渠道; 流量; Open channel; Discharge distribution; Compound cross section; |
語文 | 英文(English) |
中文摘要 | 對於複合式渠道之水力結構而言,如何估算主渠道和洪水平原的流量是重要的。 文中使用對稱矩形複合斷面之渠道作試驗,研究斷面幾何效應與流量比之關係。由研究顯示 主渠道寬度B和階梯高度Z會影響流量比。試驗中使用六種模型配合各種不同之流量。由 流量比和相對水深之關係同時建立經驗關係式,再藉由形狀、因子之考慮建立一般通式。 |
英文摘要 | For hydraulic structures in compound channels, it is essential to estimate the discharge not only in the main channel, but also on the floodplains. An experimental work was conducted in channels with symmetrical rectangular compound sections to investigate the geometry effect of the cross section on different discharge ratios. It was found that both the main channel width, B, and step height, Z, affected these ratios. Six different models were tested in a laboratory flume for a large range of discharges. The different discharge ratios are related to the relative depth, and general equations are derived for them. Variation of the discharge ratios with the relative depth are generalized by introducing a shape factor for them. |
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