One Dimensional Numerical Simulation of Bed Changes in Irrigation Channels using Finite Volume MethodXin Liu*, Abdolmajid Mohammadian and Julio Angel Infante Sedano
Dept. of Civil Engineering, University Of Ottawa, Ottawa, Canada
- *Corresponding Author:
- Xin Liu
Department of Civil Engineering
University Of Ottawa
E-mail: [email protected] uOttawa.ca
Received May 25, 2012; Accepted July 16, 2012; Published July 20, 2012
Citation: Liu X, Mohammadian A, Infante Sedano JA (2012) One Dimensional Numerical Simulation of Bed Changes in Irrigation Channels using Finite Volume Method. Irrigat Drainage Sys Eng 1:103. doi:10.4172/2168-9768.1000103
Copyright: © 2012 Mohammadian A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
A one-dimensional Saint Venant model is developed using the Einstein sediment transport formula for simulating hydraulics and bed changes in irrigation
. The governing equations are discretized using Finite Volume Method. The Central-Upwind method is used in this study to calculate the numerical flux. The model gives a stable and good prediction of sub, super and transcritical flows and captures harp changes such as hydraulic jump without leading to numerical oscillation or diffusion. An experimental test case is adopted to examine the performance of this mode. The simulated results show a good agreement with experimental data in the
section, and can predict an average value of measured profile in the downstream section of a steep channel. The knick point movement is successfully predicted by the model. The model appears to be a potential and reasonably accurate tool to predict bed changes in irrigation channels due to the water flow.