Discharge through a Permeable Rubble Mound Weir
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VIEW THE REPLYPublication: Journal of Hydraulic Engineering
Volume 131, Issue 1
Abstract
The hydrodynamics of a rubble-mound weir are theoretically and experimentally examined. This type of weir is considered to be environmentally friendly, since its permeability allows substances and aquatic life to pass through longitudinally. By performing a one-dimensional analysis on a steady nonuniform flow through the weir, discharge is described as a function of related parameters, such as flow depths on the up- and downstream sides of the weir, porosity, and grain diameter of the rubble mound, weir length, etc. A laboratory experiment is carried out to determine the empirical coefficients included in the analytical model. The theoretical solution of the discharge is compared with the experimental data to verify the analysis. It is confirmed that agreement between theory and experiment is satisfactory for a wide range of flow conditions. The present study makes it possible to apply the rubble mound weir for practical use as a discharge control system.
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Acknowledgments
This study was financially supported by the Grant in Aid for Scientific Research, from Japan Ministry of Education in 2000–2003 (Project Nos. 12650513 and 14350268) under project leader: Kohji Michioku. The laboratory experiment was conducted under the cooperation of Mr. S. Yamasawa, an undergraduate student from Kobe University and Mr. T. Oonishi and Mr. S. Morinaga, graduate students from Okayama University.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 131 • Issue 1 • January 2005
Pages: 1 - 10
Copyright
© 2004 ASCE.
History
Received: Aug 16, 2002
Accepted: Aug 11, 2004
Published online: Jan 1, 2005
Published in print: Jan 2005
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