Modeling Floating Objects at River Structures
Publication: Journal of Hydraulic Engineering
Volume 135, Issue 5
Abstract
More than half of the commercially navigable waterways in the United States are adversely impacted at some time by ice and debris conditions that hinder operation and delay navigation. This paper describes a method of combining a depth-averaged two-dimensional flow model and a discrete element model customized to simulate floating objects such as ice and debris. The flow model is the shallow-water equation module of the adaptive hydraulics system. The discrete element model (DEM) is based on a method that has been used to simulate river ice and debris accumulations and vessels such as barges. The modeling system provides designers of hydraulic structures, bridges, and ice control structures, a physically based method to evaluate design alternatives in dealing with problems due to the presence of floating objects. Descriptions of the flow model and the DEM are presented, and then numerical applications are provided, demonstrating the modeling of debris passage at the Harlan Diversion Tunnel and the evaluation of navigation conditions attributed to the guard wall at the Greenup Locks and Dam.
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Acknowledgments
The numerical models described and the results presented were obtained from research conducted under the civil works of the U.S. Army Corps of Engineers by the U.S. Army Engineer Research and Development Center. Permission was granted by the Chief of Engineers to publish this information.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 135 • Issue 5 • May 2009
Pages: 403 - 414
Copyright
© 2009 ASCE.
History
Received: Feb 13, 2006
Accepted: Nov 26, 2008
Published online: May 1, 2009
Published in print: May 2009
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