Flow Resistance Law in Channels with Flexible Submerged Vegetation
Publication: Journal of Hydraulic Engineering
Volume 131, Issue 7
Abstract
In this paper, experimental data collected in a straight flume having a bed covered by grasslike vegetation have been used to analyze flow resistance for flexible submerged elements. At first, the measurements are used to test the applicability of Kouwen’s method. Then, a calibration of two coefficients appearing in the semilogarithmic flow resistance equation is carried out. Finally, applying the -theorem and the incomplete self-similarity condition, a flow resistance equation linking the friction factor with the shear Reynolds number, the depth-vegetation height ratio and the inflection degree is deduced.
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Acknowledgment
This research is supported by a grant from the Ministero Univ. e Ricerca Scientifica e Tecnologica, Governo Italiano, ex quota 60%.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 131 • Issue 7 • July 2005
Pages: 554 - 564
Copyright
© 2005 ASCE.
History
Received: Aug 16, 2002
Accepted: Nov 9, 2004
Published online: Jul 1, 2005
Published in print: Jul 2005
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