碩士 / 淡江大學 / 水資源及環境工程學系碩士班 / 93 / We apply Preissmann’s scheme and Double Sweep Method to establish a model to solve Continuity Equation and Momentum Equation according to Saint Venant Hypotheses. The model can be applied to refer to design of the drainage system and estimate capability of the drainage system as a basis of improving drowned region.
The initial base discharge at each channel is computed using an assumed suitable rainfall intensity and Rational method. The initial depth of this model involves downstream boundary condition effect and is derived from downstream end using Standard-Step Method. The inflow of each manhole is computed by Horton’s overland flow hydrological model or given measured field data. We regard manholes of this system as the internal condition and simulate them with conservation of mass and condition of water stage. A water stage or free fall condition is specified at the downstream boundary.
The model is capable of simulating flow conditions such as open channel flow for dividing channel, junction channel and loop-reach, pressure flow and drowned flow drainage system. We choose rectangular shape and circular shape to simulate and use several kinds of symmetrically allocated tube network to evaluate. The results are in good agreement with physical phenomena.
| Identifer | oai:union.ndltd.org:TW/093TKU05087017 |
| Date | January 2005 |
| Creators | Mei-Fang Wen, 溫美芳 |
| Contributors | Chung-C., Hsu, 許 中 杰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 96 |
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