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Spatially varied flow in non‐prismatic channels. II: numerical solution and experimental verification
Author(s) -
Kouchakzadeh S.,
Kholghi M. K.,
Vatankhah MohammadAbadi A. R.
Publication year - 2002
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.37
Subject(s) - position (finance) , flow (mathematics) , channel (broadcasting) , process (computing) , mechanics , mathematics , control theory (sociology) , computer science , physics , control (management) , telecommunications , artificial intelligence , finance , economics , operating system
A new governing equation was proposed for the spatially varied flows with increasing discharge, which affects the position and the depth of the control section as well as the entire water surface profile within the channel. This paper presents the use of the Newton‐Raphson method in the solution process. The results of the computational model were compared with experimental data and with the output of the traditional equation. It was indicated that because of incorporating the expansion factor of the non‐prismatic channels, the proposed equation is able to represent the experimental data very well and hence is superior to the traditional equation for design purposes. Copyright © 2002 John Wiley & Sons, Ltd.