Non-Equilibrium Scour Evolution around an Emerged Structure Exposed to a Transient Wave

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Author(s)Velioglu Sogut, Deniz
Author(s)Sogut, Erdinc
Author(s)Farhadzadeh, Ali
Author(s)Hsu, Tian-Jian
Date Accessioned2024-06-21T18:59:43Z
Date Available2024-06-21T18:59:43Z
Publication Date2024-06-05
DescriptionThis article was originally published in Journal of Marine Science and Engineering. The version of record is available at: https://doi.org/10.3390/jmse12060946. Copyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
AbstractThe present study evaluates the performance of two numerical approaches in estimating non-equilibrium scour patterns around a non-slender square structure subjected to a transient wave, by comparing numerical findings with experimental data. This study also investigates the impact of the structure’s positioning on bed evolution, analyzing configurations where the structure is either attached to the sidewall or positioned at the centerline of the wave flume. The first numerical method treats sediment particles as a distinct continuum phase, directly solving the continuity and momentum equations for both sediment and fluid phases. The second method estimates sediment transport using the quadratic law of bottom shear stress, yielding robust predictions of bed evolution through meticulous calibration and validation. The findings reveal that both methods underestimate vortex-induced near-bed vertical velocities. Deposits formed along vortex trajectories are overestimated by the first method, while the second method satisfactorily predicts the bed evolution beneath these paths. Scour holes caused by wave impingement tend to backfill as the flow intensity diminishes. The second method cannot sufficiently capture this backfilling, whereas the first method adequately reflects the phenomenon. Overall, this study highlights significant variations in the predictive capabilities of both methods in regard to the evolution of non-equilibrium scour at low Keulegan–Carpenter numbers.
SponsorFunding This material is based upon work supported by the National Science Foundation under grant no. CNS 09-23050. The authors acknowledge funding from the National Sciences Foundation through grants CMMI-2050798 and CMMI-2050854. Acknowledgments FLOW-3D HYDRO software was made available through the FLOW-3D Academic Program.
CitationVelioglu Sogut, Deniz, Erdinc Sogut, Ali Farhadzadeh, and Tian-Jian Hsu. 2024. "Non-Equilibrium Scour Evolution around an Emerged Structure Exposed to a Transient Wave" Journal of Marine Science and Engineering 12, no. 6: 946. https://doi.org/10.3390/jmse12060946
ISSN2077-1312
URLhttps://udspace.udel.edu/handle/19716/34511
Languageen_US
PublisherJournal of Marine Science and Engineering
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
KeywordsKeulegan–Carpenter number
Keywordssolitary wave
Keywordsnon slender
Keywordswave–structure interaction
KeywordsFLOW-3D
KeywordsSedWaveFoam
TitleNon-Equilibrium Scour Evolution around an Emerged Structure Exposed to a Transient Wave
TypeArticle
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