Flow Patterns and Energy Dissipation over Various Stepped Chutes
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 132, Issue 1
Abstract
To reduce the size of the dissipation basin, the stepped chute has been accepted to be the most powerful hydraulic structure to dissipate large flow energy downstream from steep hills. This paper presents the flow characteristics and factors for energy dissipation in various types of stepped chutes: horizontal steps, inclined steps, and steps with end sills. Delineated and descript flow regimes are observed. The relationships between relative energy loss and relative critical flow depth on three stepped chutes are presented and discussed. The steps with end sills seem to be the most efficient configuration in terms of relative energy dissipation. The effect of number of steps is evident since the relative energy loss increases with the number of steps. In addition, new correlations showing the relation between relative energy loss and relative critical flow depth are proposed for practical applications.
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Acknowledgments
The writers would like to thank Commission of Higher Education (CHE) and the Thailand Research Fund (TRF) for providing financial support under Grant No. UNSPECIFIEDMRG4580020. Experimental work was done by Thodsapol Chaturabul, Nuttapong Thutanasutong, Pasit Chantawuttinun, Naphat Suphakanapitak, and Eakachai Sarepung. Their assistance is gratefully acknowledged.
References
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Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 132 • Issue 1 • February 2006
Pages: 70 - 76
Copyright
© 2006 ASCE.
History
Received: Oct 11, 2004
Accepted: Jan 31, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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