IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Study on Numerical Simulation of Dry Out in River Hydrodynamic Model
Study on Numerical Simulation of Dry Out in River Hydrodynamic Model
Author : Haixiao Jing, Changgen Liu and Jianhua Tao
Dry out of cross sections which is a common phenomenon in rivers brings numerical difficulties when using finite difference method. In this paper, two numerical techniques, wetting and drying method and slot method, are compared in order to solve this problem. Then a hydrodynamic model is developed based on Saint-Venant Equations and Preissmann implicit scheme. A modified slot method is applied in this model to deal with the dry out section of the river which is caused by the seasonal distribution of rainfall, greatly varied topography and control of dams and sluice gates and so on. Finally, examples are given to validate the model by comparing the numerical results with the analytical ones. The results shows that the slot method used in this model can deal with the dry out successfully and exactly.
File Size : 381,356 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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