潰壩時潰口流量與水位關係之研究

Discharge-Water Stage Relationship at Dam-Break Site

許德宙(De-Jou Hus)

指導教授 ： 許中杰

淡江大學/工學院/水資源及環境工程學系碩士班/碩士(2012年)

https://doi.org/10.6846/TKU.2012.00770

摘要

本研究應用模型試驗及數值模擬分析潰壩時潰口流量與水位之關係，試驗之潰壩模型置於底床波降S0=0.001、長12.00m及寬0.775m而渠壁深0.70m之直線渠槽下游端。潰口形狀為矩形。壩體設置可分為三層，第一層為潰口形狀，第二層為一較潰口最大寬度寬之左右對稱雙開門板，第三層為一可向上抽離之隔板。並設定殘留壩高W=0.250m、W=0.166m、W=0.125m、W=0.100m和W=0.000m以模擬非完全潰壩之現象。
本研究利用FLUENT商業軟體建立非恆態流之模式，以紊流模式依據三維模型進行潰壩模擬，其模擬條件與試驗條件相同，並將模擬結果與試驗結果比較分析。

關鍵字

潰壩 ； 潰口流量 ； FLUENT

並列摘要

In this study use the model and simulation analysis of discharge-water stage relationship at dam-break site. The dam-break model to placed on straight channel downstream. The experiment was conducted in flume 12.00m long, 0.775m wide and 0.7m high with bed slope=0.001. Shape of dam-break is rectangular. Dam is divided into three levels, the first level is the shape of dam-break, the second level is the gate and the third level is the vertical sliding gate. The test set residual dam W=0.250m high, W=0.166m high, W=0.125m high, W=0.100m high and no residual dam.
In this study use the FLUENT to establish the unsteady flow numerical model. Simulate the dam-break by turbulence model based on three-dimensional model. The simulation conditions and model conditions are the same. Comparative and analysis of simulation and experimental results.

並列關鍵字

Dam-Break ； Discharge at Dam-Break site ； FLUENT

參考文獻

4. Stansby, P. K., Chegini, A. and Barnes, T. C. D., “The initial stages of dam-break flow”, Journal of. Fluid Mech., Vol.347, pp. 407-424, (1998)

6. Ancey, C., Cochard, S. and Andreini, N., “The dam-break problem for viscous fluids in the high-capillary-number limit”, Journal of Fluid Mech., Vol.624, pp. 1-22, (2009)

8. Lauber, G. and Hager, W. H., “Experiment to dambreak wave: Sloping channel ”, Journal of Hydraulic Research, Vol. 36, No. 5, (1998)

9. Lauber, G. and Hager, W. H., “Experiment to dambreak wave: Horizontal channel ”, Journal of Hydraulic Research, Vol. 36, No. 5, (1998)

參考文獻