Paper Information

Journal:   INTERNATIONAL JOURNAL OF CIVIL ENGINEERING   September 2003 , Volume 1 , Number 1; Page(s) 33 To 40.
 
Paper: 

AN UNCOUPLED SOLUTION TECHNIQUE FOR THE PREDICTION OF CHANNEL MIGRATION IN MEANDERING RIVERS

 
 
Author(s):  GHAFOURI H.R.*
 
* 
 
Abstract: 
A two-dimensional mathematical model for the prediction of time-variations of river-bend displacements was developed which is particularly applicable to meandering rivers. The computational procedure consists of two stages, that is , in the first stage by utilizing depth-averaged continuity and momentum equations, velocity field as well as water surface profile in a river is determined. The well-known Finite-Element technique was applied to the governing equations. In the second stage the rate of river bank erosion is computed in terms of determined depths and velocities. The model utilizes Odgaards (1989) bank-erosion model in this stage. The procedure is then performed repeatedly over the entire time span in a staggered manner. The developed model was applied to simulate the migration of Qezel Ozan river. The fairly good match obtained indicates the applicability of the model.
 
Keyword(s): MEANDER MIGRATION, SHALLOW WATER, FINITE ELEMENT TECHNIQUE
 
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