• 作者： Issam Al-Khatib
• 作者服務機構： Civil Engineering Department Near East University
• 中文摘要： 本文主要目的在建立一套於不同下游擴張條件下，複式斷面水槽之流量估算方法。我們將探討下游擴張效應對流量係數，與接近速度係數，之影響，乃之一般方程式為一些重要參數的函數。如果堰頂溢流水頭，已知，這些一般公式可用來估算水槽之流量，且其絕對誤差祗有4%左右。我們也同時探討不對稱複式斷面水槽之流量估算的各種問題，並得到一些結果。
• 英文摘要： The subject of investigation in this paper is discharge estimation in flow measurement flumes ofrectangular compound cross sections with different downstream expansions. The effect of downstreamexpansion on the values of the discharge coefficient, and approach velocity coefficient, has beenstudied. General equations for and have been found as a function of relevant parameters. By usingthese general equations, one can estimate the flow discharge of a flume when the head value, overthe crest elevation is given with an absolute error of 4%. Head-Discharge equations for asymmetricalflow measurement flumes of compound cross sections have been derived and the final results only arepresented.
• 中文關鍵字： open channel; downstream expansion; compound cross section; discharge coefficient; flow measurement
• 英文關鍵字： --