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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Research on waterway regulation of fluctuating backwater zone of ankang hydro-junction
Research on waterway regulation of fluctuating backwater zone of ankang hydro-junction
Author : LIU WANLI (1), LIU JUNTAO (2)
ABSTRACT
The navigation water flow conditions in fluctuating backwater zone of Ankang hydro-junction not only are influenced by
daily regulation flow of Shiquan hydro-junction upstream, but also are influenced by reservoir operation of lower Ankang
hydro-junction. The flow in fluctuating backwater zone is characterized not only with the characteristics of mountainous
river, but also with the characteristics of reservoir area. At the same time, the reach is a continuous rush curve reach
with rapid flows. This paper presents a study of two-dimensional modeling for fluctuating backwater zone of Ankang
Hydro-junction, following a sustained research program. A depth-averaged two-dimensional mathematical model is
established under the orthogonal curvilinear body-fitted coordinate system with staggered grid. The governing equations
of flow are discretized with the finite volume method. The computed water level, velocity are verified by field data in the
fluctuating backwater zone of Ankang Hydro-junction. It is shown that the flow field in fluctuating backwater zone can be
simulated reasonably well. According to the characters of the fluvial process and navigation-obstruction, the regulation
method is presented. Based on the aforementioned regulation method, Variations of water level, surface slope and flow
velocity, caused by the regulation works in fluctuating backwater zone of Ankang Hydro-junction are analyzed. And
finally, the reasonable regulation works are proposed.
File Size : 1,574,178 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 27/08/2015
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