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4/2011 vol. 20
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ORIGINAL RESEARCH
Comparison of Analytical and Numerical Solutions for Steady, Gradually Varied Open-Channel Flow
Jacek Kurnatowski
 
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Department of Hydroengineering, West Pomeranian University of Technology,
Piastów 50a, 70-311 Szczecin, Poland
 
 
Pol. J. Environ. Stud. 2011;20(4):925-930
 
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KEYWORDS
open-channel flow
river looped networks
gradually varied flow
Bresse formula
numerical
integration
 
ABSTRACT
The depths for a steady, gradually varied flow in a rectangular open channel with infinite width obtained analytically by the Bresse formula and numerically using trapezoidal rule for integration have been compared. It has been shown that numerical integration may generate significant errors of flow values for looped river networks. The method for choosing the optimum integration step that minimizes numerical integration errors has been presented.
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eISSN:2083-5906
ISSN:1230-1485
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