Clear-Water Local Scour around Pile Groups in Shallow-Water Flow
Publication: Journal of Hydraulic Engineering
Volume 138, Issue 2
Abstract
The results of an experimental study on clear-water scour at pile groups under steady flows at threshold velocity are presented. A wide range of pile group arrangements, spacing, and submergence ratios are studied. Uniform bed material in a 46-m long, 1.52-m wide, and 1.9-m deep flume was used to obtain comprehensive data. Empirical relations to demonstrate the effects of the studied variables are presented. On the basis of the findings of this study, a new method to predict the effect of pile group arrangements, pile spacing, and submergence ratio on local scour depth is proposed. The experimental data obtained in this study and data available from the literature are used to evaluate predictions of existing methods and the accuracy of the proposed method. The proposed method gives reasonable scour depth predictions.
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Acknowledgments
The financial support from the Fundamental Research Grant Scheme (FRGS) given by University Putra Malaysia (Grant No. UNSPECIFIED07-10-07- 429FR) for this project is acknowledged. The experiments were conducted in the Hydraulic Laboratory in National Hydraulic Research Institute of Malaysia (NAHRIM).
References
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Information
Published In
Journal of Hydraulic Engineering
Volume 138 • Issue 2 • February 2012
Pages: 177 - 185
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Feb 5, 2010
Accepted: Jul 11, 2011
Published online: Jul 13, 2011
Published in print: Feb 1, 2012
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