Efficient Implicit Finite-Element Hydrodynamic Model for Dam and Levee Breach
Publication: Journal of Hydraulic Engineering
Volume 137, Issue 9
Abstract
This technical paper presents the development and application of a pseudo-transient continuation (PTC)– inspired flow model for the simulation of dam and levee failure. The unstructured, implicit, Petrov-Galerkin finite-element model relies on computed residuals to automatically adjust the time-step size. The implicit time integration, together with the automatic time-step size selection through PTC, makes the model computationally efficient. The model is verified and applied to several analytic and real-world test cases that exercise model behavior and accuracy for several critical, transcritical, and subcritical flows. The result is an efficient and accurate prediction of both the speed and depth of shock waves as the dam-break flow passes over initially dry and wet land.
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Acknowledgments
The results presented in this paper were obtained through research sponsored by the U.S. Army Corps of Engineers Systemwide Water Resources Program (SWWRP). Permission was granted by the Chief of Engineers to publish this information.
The authors also acknowledge Mr. Dirk Schwanenberg for providing the Malpasset dam-break bathymetric and observational data.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 137 • Issue 9 • September 2011
Pages: 1005 - 1018
Copyright
© 2011 American Society of Civil Engineers.
History
Received: May 23, 2010
Accepted: Nov 30, 2010
Published online: Dec 4, 2010
Published in print: Sep 1, 2011
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