Transcritical Flow due to Channel Contraction
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Volume 134, Issue 4
Abstract
The singular point is a physical phenomenon consistent with critical flow conditions, and, consequently, the real control section of a water surface profile. A general method to study the location, type, and water surface slope of a singular point is described. This method, in addition to improving the classic gradually-varied flow theory, can be used for the design of channel contractions involving transcritical flows, as in the case of chute spillways and inlets to river diversion tunnels. The method is explained in the case of a chute spillway and verified against experimental data recorded in a Venturi channel.
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Acknowledgments
The senior writer wishes to express his deep gratitude to Professor Willi H. Hager, from the VAW at ETH Zurich, for the continuous supply of information, without which the present work could not have been prepared.
References
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Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 4 • April 2008
Pages: 492 - 496
Copyright
© 2008 ASCE.
History
Received: Aug 24, 2006
Accepted: May 18, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
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