Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000685
S. Elsayed, R. Gijsman, T. Schlurmann, N. Goseberg
: Along sandy coastlines, submerged, shore-parallel sandbars play an essential role in shoreline morphology by dissipating wave energy through depth-induced wave breaking. While wave breaking and sediment transport around sandbars are complex three-dimensional (3D) processes, shoreline morphology is typically simulated with depth-averaged models that feature lower computational demand than do 3D models. In this context, this study examines the implications of depth-averaging the fl ow fi eld and approximating the breaking process in nonhydrostatic models (e.g., XBeach nonhydrostatic) for the hydro-and morphodynamic processes around sandbars. The implications are drawn based on reproducing large-scale experiments of a barred beach pro fi le using the single-layer (XBNH) and the reduced two-layer (XBNH + ) modes of XBeach. While hydrodynamic processes were predicted with high accuracy on the sandbar ’ s seaward side, wave heights were overpredicted on the bar ’ s landward side. The overestimation was due to the simpli fi ed reproduction of the complex breaking process near the sandbar ’ s peak, particularly in terms of the generated turbulence in the water column. Moreover, the velocity pro fi le with a strong undertow could only be represented in a simpli fi ed way even using the two-layer mode XBNH + , thus resulting in inaccurate predictions of sediment loads around the sandbar. A parametric study is performed, and it revealed which model parameters control the simulation of the wave-breaking process. Thus, wave height predictions could be improved by tuning the energy-dissipation parameters. However, fl ow velocities and morphodynamic predictions could not be improved accordingly. Thus, this study identi fi es possible hydrodynamic model improvements, such as incorporating a roller dissipation model. Moreover, it improves understanding of key drivers and processes that should be included in nonhydrostatic depth-averaged models to simulate morphological changes around sandbars more ef fi ciently. DOI: 10.1061/(ASCE)WW.1943-5460.0000685 . This work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/.
{"title":"Nonhydrostatic Numerical Modeling of Fixed and Mobile Barred Beaches: Limitations of Depth-Averaged Wave Resolving Models around Sandbars","authors":"S. Elsayed, R. Gijsman, T. Schlurmann, N. Goseberg","doi":"10.1061/(asce)ww.1943-5460.0000685","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000685","url":null,"abstract":": Along sandy coastlines, submerged, shore-parallel sandbars play an essential role in shoreline morphology by dissipating wave energy through depth-induced wave breaking. While wave breaking and sediment transport around sandbars are complex three-dimensional (3D) processes, shoreline morphology is typically simulated with depth-averaged models that feature lower computational demand than do 3D models. In this context, this study examines the implications of depth-averaging the fl ow fi eld and approximating the breaking process in nonhydrostatic models (e.g., XBeach nonhydrostatic) for the hydro-and morphodynamic processes around sandbars. The implications are drawn based on reproducing large-scale experiments of a barred beach pro fi le using the single-layer (XBNH) and the reduced two-layer (XBNH + ) modes of XBeach. While hydrodynamic processes were predicted with high accuracy on the sandbar ’ s seaward side, wave heights were overpredicted on the bar ’ s landward side. The overestimation was due to the simpli fi ed reproduction of the complex breaking process near the sandbar ’ s peak, particularly in terms of the generated turbulence in the water column. Moreover, the velocity pro fi le with a strong undertow could only be represented in a simpli fi ed way even using the two-layer mode XBNH + , thus resulting in inaccurate predictions of sediment loads around the sandbar. A parametric study is performed, and it revealed which model parameters control the simulation of the wave-breaking process. Thus, wave height predictions could be improved by tuning the energy-dissipation parameters. However, fl ow velocities and morphodynamic predictions could not be improved accordingly. Thus, this study identi fi es possible hydrodynamic model improvements, such as incorporating a roller dissipation model. Moreover, it improves understanding of key drivers and processes that should be included in nonhydrostatic depth-averaged models to simulate morphological changes around sandbars more ef fi ciently. DOI: 10.1061/(ASCE)WW.1943-5460.0000685 . This work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/.","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47008051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000680
Xing-sen Guo, De-feng Zheng, Lu Zhao, C. Fu, T. Nian
Abstract The impact forces of submarine landslides (i.e., non-Newtonian fluids) on oil and gas pipelines, especially the most dangerous drag force, are of great significance in the design of deep-w...
{"title":"Quantitative Composition of Drag Forces on Suspended Pipelines from Submarine Landslides","authors":"Xing-sen Guo, De-feng Zheng, Lu Zhao, C. Fu, T. Nian","doi":"10.1061/(asce)ww.1943-5460.0000680","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000680","url":null,"abstract":"Abstract The impact forces of submarine landslides (i.e., non-Newtonian fluids) on oil and gas pipelines, especially the most dangerous drag force, are of great significance in the design of deep-w...","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45831972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000679
I. Haltas
{"title":"Estimating Extreme High Still Water Levels in North San Francisco Bay: Comparison of Annual Maxima Method with Direct and Indirect Methods","authors":"I. Haltas","doi":"10.1061/(asce)ww.1943-5460.0000679","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000679","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47326532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000706
I. Safari, D. Mouazé, F. Ropert, S. Haquin, A. Ezersky
{"title":"Experimental Study to Determine Forces Acting on Starbloc Armor Units and Velocities Occurring in a Single-Layer Rubble Mound Breakwater under Regular Waves","authors":"I. Safari, D. Mouazé, F. Ropert, S. Haquin, A. Ezersky","doi":"10.1061/(asce)ww.1943-5460.0000706","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000706","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58563878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000682
Karthik Ramnarayan Swaminathan, V. Sundar, S. Sannasiraj
{"title":"Hydrodynamic Characteristics of Concave Front Pile-Supported Breakwaters with a Tubular Wave Screen","authors":"Karthik Ramnarayan Swaminathan, V. Sundar, S. Sannasiraj","doi":"10.1061/(asce)ww.1943-5460.0000682","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000682","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47051707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000693
G. Vittori, P. Díaz-Carrasco, P. Blondeaux
{"title":"Vorticity–Stream Function Formulation for Turbulent Oscillatory Boundary Layer over the Sea Bottom","authors":"G. Vittori, P. Díaz-Carrasco, P. Blondeaux","doi":"10.1061/(asce)ww.1943-5460.0000693","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000693","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45657834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000677
Heng Lin, Y. Xiang, Yunshen Yang, Chao Gao
Abstract The submerged floating tunnel (SFT) is a newly developed traffic structure for crossing the long waterway. On the basis of the vehicle–tunnel coupled vibration, the vortex-induced effect o...
{"title":"Fluid–Vehicle–Tunnel Coupled Vibration Analysis of a Submerged Floating Tunnel Based on a Wake Oscillator Model","authors":"Heng Lin, Y. Xiang, Yunshen Yang, Chao Gao","doi":"10.1061/(asce)ww.1943-5460.0000677","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000677","url":null,"abstract":"Abstract The submerged floating tunnel (SFT) is a newly developed traffic structure for crossing the long waterway. On the basis of the vehicle–tunnel coupled vibration, the vortex-induced effect o...","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49322700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000711
M. G. de Souza e Silva, N. Kerpen, P. Rosman, C. Neves, T. Schlurmann
{"title":"Directional Infragravity Waves Induced by Bichromatic and Bidirectional Waves: Theoretical Approach and Experimental Affirmation","authors":"M. G. de Souza e Silva, N. Kerpen, P. Rosman, C. Neves, T. Schlurmann","doi":"10.1061/(asce)ww.1943-5460.0000711","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000711","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58563888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1061/(asce)ww.1943-5460.0000688
M. Ueno
{"title":"Analysis of Holding Force Limit and Provision against Dragging Anchor","authors":"M. Ueno","doi":"10.1061/(asce)ww.1943-5460.0000688","DOIUrl":"https://doi.org/10.1061/(asce)ww.1943-5460.0000688","url":null,"abstract":"","PeriodicalId":54367,"journal":{"name":"Journal of Waterway Port Coastal and Ocean Engineering","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49455590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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