碩士 / 國立成功大學 / 水利及海洋工程學系碩博士班 / 93 / The size of storm sewer is decided by steady uniform flow for designed discharge. The water surface would be raised when subcritical flow passed through a sudden expansion. The ability of conveyance is not up to designed standard induced by effect of backwater, because of distance is not long enough between each junction chamber or each manhole. According to open channel flow theory, the paper establishes two storm sewer models. One can estimate the influence of rise in water stage at junction chamber or manhole, and the other can calculate the discharge of storm sewer. Also, both of storm sewer models were verified by the experiment.
Flow types in sewers can be open channel flow, pipe flow, gate flow or mixed flow. Open channel flow is usually requested for the design of sewers. In this paper, subcritical flow is discussed. The results of experiment indicate that the water surface of upstream was raised cause of the expansion of junction chamber. The comparison for simulating and experiment results included discharge and water stage is similar. For designing storm sewer with no lateral flow, two storm sewer models established in the paper are applicable to refer to.
| Identifer | oai:union.ndltd.org:TW/093NCKU5083053 |
| Date | January 2005 |
| Creators | Cheng-Yu Lai, 賴政佑 |
| Contributors | Chang-Tai Tsai, 蔡長泰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 53 |
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