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題 名 | 梯形寬頂堰堰流公式適用性之研究=A Study on the Applicability of Discharge Formulas for Trapezoidal Broad-Crested Weirs |
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作 者 | 蔡長泰; 蔡智恆; | 書刊名 | 臺灣水利 |
卷 期 | 45:2=178 1997.06[民86.06] |
頁 次 | 頁22-29 |
分類號 | 443.1 |
關鍵詞 | 實驗方法; 梯形寬頂堰; 堰流公式; Experimental study; Trapezoidal broad-crested weir; Discharge formulas; |
語 文 | 中文(Chinese) |
中文摘要 | 本文以實驗方法探討寬頂堰堰流公式之適用性。所採用之寬頂堰為梯形寬頂堰, 堰側面坡度有 1:1 及 1:2 兩種,用以探討寬頂堰側面坡度對堰流公式中流量係數的影響。 並在堰表面塗上摻砂之油漆以評估寬頂堰表面上之粗糙型態對流量係數的影響。此外,亦探 討自由堰流和潛沒堰流流況時之流速剖面差異。實驗結果顯示,堰流公式適用性甚佳,但須 視寬頂堰之形狀及堰表面粗糙型態而修正流量係數。 |
英文摘要 | This paper is aimed at studying the applicability of discharge formulas for trapezoidal broad-crested weirs. Two kinds of trapezoidal broad-crested weirs, whose side slopes are 1:1 and 1:2, are adopted to examine the effect of side slope to discharge coefficients. The effect of roughness for discharge coefficient is performed by painting the sand-paint mixture on weirs' surfaces. Furthermore, the discrepancy of velocity profiles for free weir flow and submerged weir flow is also studied. Based on the experimental results, the discharge formulas are appropriate. However, the discharge coefficients of the formulas would be modified with the side slope and roughness of weirs. |
本系統中英文摘要資訊取自各篇刊載內容。