碩士 / 國立臺灣大學 / 土木工程研究所 / 84 / A laterally-averaged hydraulic model is developed in this
study. It is applicable to simulate the complicated hydraulic
characteristics of estuarine rivers. The governing equations of
the model are established by laterally integrating the
continuity and momentum equations. A Semi-Implicit Finite
Difference Method was used in this model. Since shallow water
approximation is adopted, momentum equation in the vertical
direction is reduced to the hydrostatic pressure distribution.
In order to incorporate the variations of the physical domain
due to changes in both bottom and free surface, a sigma-
coordinate transformation scheme was adopted. These can
increase the efficiency and stability of this model. The model
is applied to simulate the surface variations of a rectangular
channel, closed at one end, and subjected to a standing wave.
Comparing to the analytical solutions are satisfactory. The
model is also applied to simulate the field data of Keelong
River, it indicates that the characteristics of the velocity
field can be properly modeled.
| Identifer | oai:union.ndltd.org:TW/084NTU00015113 |
| Date | January 1996 |
| Creators | Wang shun-jia, 王順加 |
| Contributors | Lee hong-yuan, 李鴻源 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 64 |
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