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題名 | 感潮下水道幹線流況模擬之研究 |
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作 者 | 林保宏; 許銘熙; 林國峰; 王如意; | 書刊名 | 農業工程學報 |
卷期 | 40:3 1994.09[民83.09] |
頁次 | 頁1-14 |
分類號 | 445.43 |
關鍵詞 | 下水道排水系統模式; 聖文南方程式; 數值方法; 迴水效應; Storm sewer system simulation model; Saint-venant equation; Numerical method; Backwater effect; |
語文 | 中文(Chinese) |
中文摘要 | 本文考慮最高精度水力特性之動力波(dynamic wave)方程式,亦即以完整的聖文南(Saint-Venant)方程式為理論基礎,建立高精度之下水道排水系統模式,以模擬排水幹、支線之水流動態。數值方法採用非線性四點隱式差分法,並配合牛頓-拉福森法(Newton-Raphson)法疊代求解。於滿管流時則以卜里斯曼細縫(Preissmann slot)虛擬水面線。模式應用主要著眼於排水幹線系統受潮位頂托所引之迴水效應之影響模擬。本模式上游邊界可為流量歷線或水位歷線;下游邊界條件則有四種選擇:一為水位歷線,二為流量歷線,三為自由流況,四則為以上三者之混合歷線型式,也就是可以模擬整個排水至閘門關閉之抽水過程。由模擬之結果與實測驗證資料之比較,可發現與實際之趨勢一致且合理。 |
英文摘要 | Based on the 4-point implicit finite difference formulation of the Saint-Venant equations, a highly accurate storm sewer system simulation model is developed. The model provides realistic simulations of flow in main and tributary pipes. For pressurized flows, the hypothetical Preissmann piezometric open slot is adopted. Both pressurized and free surface flows are simultaneously solved using the Newton-Rephson iteration. The focus of application is on the simulation of backwater due to the down-stream boundary influence. The upstream boundary conditions for the model can be either discharge or stage hydrographs. The downstream boundary condition can be chosen from the following : the water stage hydrograph, the discharge hydrograph, the rating curve, and the compound of the above three. The model is successfully applied to a sewer system with backwater effects. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。