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Volume :35 Issue : 2 2008      Add To Cart                                                                    Download

A comparison of conveyance methods for compound channels

Auther : MUSTAFA MAMAK

Cukurova University, Faculty of Engineering & Architecture

Department of Civil Engineering, Adana, 01330, TURKEY.

E-mail: mmamak@cukurova.edu.tr

ABSTRACT 

One-dimensional (1-D) methods, namely, coherence method by Ackers (COHM) and exchange discharge method (EDM), and two-dimensional (2-D) method, namely, Shiono-Knight method (SKM) are investigated for computing the discharge capacity of a compound channel. The validity of the methods were tested against previously published experimental data sets. A comparison is made between 1-D and 2-D models, with respect to the accuracy and ease of application for conveyance calculations. It is shown that EDM is able to simulate the measured discharge values more accurately among 1-D methods and also gives less error than 2-D SKM for the data analyzed herein. EDM is hence recommended for estimating the discharge capacity of a compound channel.

 

Keywords: 1-D models (COHM, EDM); 2-D model (SKM); Compound channels; Conveyance; Stage-discharge relationhip.

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