Stone Stability in Nonuniform Flow
Publication: Journal of Hydraulic Engineering
Volume 137, Issue 9
Abstract
This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and extended. On the basis of the data, a new relationship between flow parameters and bed damage—expressed as a stone entrainment formula—has been established for nonuniform flow. As the present data is in line with existing data on other flows, the present relation seems applicable for other types of nonuniform flow as well. Such a relationship could provide more consistent design criteria and allow an estimate of the cumulative damage over time, which is important for making decisions regarding maintenance frequency and lifetime analysis of hydraulic structures.
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Acknowledgments
This research has been financially supported by the Ministry of Education and Training of Vietnam (under UNSPECIFIEDProject No. 322) and Delft University of Technology. This financial support is gratefully acknowledged. The writers are grateful to Wim Uijttewaal, Sander de Vree of Environmental Fluid Mechanics Section of Delft University of Technology for their support and help during the experimental work.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 137 • Issue 9 • September 2011
Pages: 884 - 893
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Dec 3, 2008
Accepted: Dec 22, 2010
Published online: Dec 27, 2010
Published in print: Sep 1, 2011
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