Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
Numerical Evaluation of Stability Methods for Rubble Mound Breakwater Toes
Publication: Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
ABSTRACT
Since 1977 dedicated studies are made to the stability of rubble mound break-water toes under wave attack. A large number of stability methods is available, but prediction accuracy is low and validity ranges are too small for use in practice. In this research the decoupled model approach is used to evaluate prediction capacity of existing toe stability methods. The approach uses numerical model IH-2VOF for a prediction of stability. Review of the model showed that it is highly sensitive to stone properties and that turbulence was not modelled. Under the assumption that the latter is not of major importance, calibration of motion formulae against physical measurements and evaluation of the stability methods was performed. The decoupled model approach appeared to give good stability predictions. Validity limits of the stability methods seemed to be too strict. A ranking of stability methods was made. Future validation should confirm the results before incorporation in design manuals.
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ACKNOWLEDGEMENTS
This research would not have been possible without valuable support by prof.dr.ir. Wim Uijttewaal, dr. Barbara Zanuttigh and dr. Markus Muttray. Their comments and suggestions were greatly appreciated.
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Published In
Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
Pages: 915 - 924
Editors: Louise Wallendorf, U.S. Naval Academy and Daniel T. Cox, Ph.D., Oregon State University
ISBN (Online): 978-0-7844-8030-4
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© 2017 American Society of Civil Engineers.
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Published online: Jul 11, 2017
Published in print: Jul 11, 2017
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