Proceedings of ... Conference on Coastal Engineering最新文献_第10页

EXPERIMENTAL WAKE DYNAMICS OF PILES WITH ARTIFICIAL BIOFOULING IN WAVES 波浪中人工生物污垢桩的尾流动力学实验

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.39

Clemens Krautwald, Constantin Schweiger, David Schürenkamp, Nils Goseberg

{"title":"EXPERIMENTAL WAKE DYNAMICS OF PILES WITH ARTIFICIAL BIOFOULING IN WAVES","authors":"Clemens Krautwald, Constantin Schweiger, David Schürenkamp, Nils Goseberg","doi":"10.9753/icce.v37.structures.39","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.39","url":null,"abstract":"Offshore structures become colonized by marine orga-nisms after a short period of time, whose common benthic communities depend among others on geographic location, water depth, water temperature, food supply, salinity and oxygen content of the water (Kröncke and Bergfeld, 2003; Shi et al., 2012). While biofouling can be categorized in biological terms as bivalves, kelp, algae, barnacles, tubeworms and other species (van der Stap et al., 2016; Wilhelmsson and Malm, 2008), engineers mostly distinguish between hard and soft marine growth based on the strength of their outer shell alone (Shi et al., 2012; Skaugset and Baarholm, 2008). Due to an increasing demand for sustainable energy, the offshore renewables industry experiences significant growth. However, many uncertainties persist in the consideration of biofouling, specifically when calculating loads accor-ding to the Morison concept, the influence of marine fouling on fatigue reassessment, on the flow velocities around cylinders and the vortex formation under waves. For the first time, the flow around cylinders with different artificial marine biofouling was recorded and analyzed in an extensive experimental study using a comprehensive 4D particle tracking velocimetry (PTV) system.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135434332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE EFFECT OF WIND STRESS ON WAVE OVERTOPPING ON VERTICAL SEAWALL 风应力对垂直海堤波浪超顶的影响

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.49

Sara Tuozzo, Angela Di Leo, Mariano Buccino, Fabio Dentale, Eugenio Pugliese Carratelli, Mario Calabrese

{"title":"THE EFFECT OF WIND STRESS ON WAVE OVERTOPPING ON VERTICAL SEAWALL","authors":"Sara Tuozzo, Angela Di Leo, Mariano Buccino, Fabio Dentale, Eugenio Pugliese Carratelli, Mario Calabrese","doi":"10.9753/icce.v37.papers.49","DOIUrl":"https://doi.org/10.9753/icce.v37.papers.49","url":null,"abstract":"Onshore wind can significantly affect wave overtopping process and increase mean overtopping discharge. Thus, the wind should be an important variable in coastal design process. However, despite many researches have analyzed the influence of wind on the overtopping, there is still a lack of exhaustive knowledge about this phenomenon. To further analyze the wind effects, the CFD model FLOW-3D has been used to investigate wave overtopping at vertical seawalls. The single-fluid approach has been adopted, i.e. the presence of wind has been simulated via the wind shear stress on the sea surface. The main aim of this work is to verify the ability of this simplified numerical modelling to capture the macro-processes involved in the phenomenon of wave overtopping. The presence of wind shear stress has led to physically consistent results. It confirmed that as the mean overtopping discharge decreases, as the wind effect increases. Furthermore, numerical results have shown that the advection of water droplets behind the structure by the wind is the key mechanism for the enhancement of wave overtopping. Finally, by gathering numerical results and laboratory data carried out by Durbridge (2021), a new predictive formula to estimate the wind factor is provided.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"372 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135429605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FEASIBILITY STUDY OF SAND BYPASS AT AVEIRO AND FIGUEIRA DA FOZ INLETS aveiro和figueira油田入口砂石旁通的可行性研究

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.65

Margarida Ferreira, Carlos Coelho, Márcia Lima, Cristina Bernardes, Paulo Baptista, Paulo A. Silva, Ricardo Carvalho, Malcolm Pound, Celso Pinto

引用次数: 1

FLEXIBLE FLUID-STRUCTURE INTERACTION OF A FLEXIBLE PLANT MODEL FOR NATURE-BASED SOLUTIONS 基于自然解决方案的柔性植物模型的柔性流固相互作用

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.38

Ross Henteleff, Acacia Markov, Jacob Stolle, Ioan Nistor, V Sriram

引用次数: 0

AN INTER-COMPARISON STUDY OF GREEN AND GRAY STRUCTURE EFFECTS ON OVERLAND FLOW FLOODING AND FORCE ON COASTAL BUILDINGS 绿色和灰色结构对坡面流、洪水和海岸建筑物受力影响的相互比较研究

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.28

Hai Van Dang, Sungwon Shin, Hyoungsu Park, Tori Tomiczek, Daniel Cox, Dong-Soo Hur

引用次数: 0

STRENGTHENING COASTAL DEFENCE WITH ARTIFICIAL DUNES 利用人工沙丘加强海防

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.sediment.51

Pieter Rauwoens, Glenn Strypsteen, Jennifer Derijckere, Dries Bonte, Sam Provoost, Toon Verwaest, Steven Muylaert, Peter Van Besien

{"title":"STRENGTHENING COASTAL DEFENCE WITH ARTIFICIAL DUNES","authors":"Pieter Rauwoens, Glenn Strypsteen, Jennifer Derijckere, Dries Bonte, Sam Provoost, Toon Verwaest, Steven Muylaert, Peter Van Besien","doi":"10.9753/icce.v37.sediment.51","DOIUrl":"https://doi.org/10.9753/icce.v37.sediment.51","url":null,"abstract":"The Belgian coast is primarily sandy and is locally subject to erosion (Deronde, 2004). Traditionally, erosion was counteracted using hard engineering structures like groynes, seawalls and sea dikes. Nowadays, the Belgian government uses a different strategy by adopting a more soft and dynamic approach where possible. Many ‘soft’ managing activities at the Belgian coast are carried out in the form of regular and routine sand nourishments to cope for future flooding risks and coastal erosion (Houthuys, 2012). This method gives room to a new approach for coastal management where the natural elements and processes facilitate the development of new engineered dune areas at locations where traditional dike structures currently protect the hinterland. In the context of climate change and strict requirements for water safety, these hard to adapt engineering structures will not resist future flood events and more innovative solutions like dune in front of a dike principles to deal with rising sea level are receiving considerable attention. As a result, concepts are worked out in which traditional sea dikes are reinforced with newly created dune systems, offering a high level of protection of coastal infrastructure and at the same time offering a more natural appearance and higher ecological and socio economical values. In the framework of the SARCC project, one pilot site is realized in Raversijde. Besides the coastal defense function of the artificial dune, a second benefit is achieved: mitigating the nuisance, created by aeolian sand transport and preventing roads and tram tracks at the dike crest to be buried in sand.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SPATIO-TEMPORAL ANALYSIS OF SCOUR AROUND JACKET TYPE OFFSHORE FOUNDATIONS UNDER CLEAR WATER AND LIVE BED CONDITIONS 清水和活床条件下导管式近海基础冲刷时空分析

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.sediment.52

Ramish Satari, Mario Welzel, Alexander Schendel, Insa Neuweiler, Torsten Schlurmann

{"title":"SPATIO-TEMPORAL ANALYSIS OF SCOUR AROUND JACKET TYPE OFFSHORE FOUNDATIONS UNDER CLEAR WATER AND LIVE BED CONDITIONS","authors":"Ramish Satari, Mario Welzel, Alexander Schendel, Insa Neuweiler, Torsten Schlurmann","doi":"10.9753/icce.v37.sediment.52","DOIUrl":"https://doi.org/10.9753/icce.v37.sediment.52","url":null,"abstract":"As an important contribution to the fulfilment of renewable energy targets, the offshore wind sector in Europe has grown significantly over the past decade (WindEurope 2021). Jacket structures are becoming more widely used as substructures for offshore wind turbines to accommodate the expansion towards greater water depth and to provide a stable basis for megastructures with hub heights greater than 200 m. However, there have been few studies (Chen et al., 2014; Baelus et al., 2018; Welzel et al., 2019; Welzel et al., 2020) that systematically address scour development at jacket structures. In addition, while the local equilibrium scour depth around pile foundations has been studied extensively in the past (e.g. Melville and Coleman, 2000; Sumer and Fredsøe, 2001; Schendel et al., 2020), there have been few studies on the development of spatial scour patterns, particularly around more complex offshore structures such as jackets. In this context, this study aims to improve the understanding of scour development around jacket type offshore wind foundations.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LONG TERM MORPHOLOGIC MODELLING OF DELTA DEVELOPMENT IN BRETON SOUND RESULTING FROM A PROPOSED DIVERSION STRUCTURE 布列塔尼海峡由拟建的导流结构引起的三角洲发展的长期形态模拟

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.sediment.25

Qimiao Lu, Fred Scott, Yarzar Tun, Rob Nairn

引用次数: 0

RECOVERY OF SURFACE WAVES FROM BOTTOM PRESSURE BY NEURAL NETWORK WITH BISPECTRUM 用双谱神经网络从底压中恢复表面波

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.21

Hiyori Yoshino, Noriaki Hashimoto, Yoshihiko Ide, Koji Kawaguchi, Masao Mitsui

{"title":"RECOVERY OF SURFACE WAVES FROM BOTTOM PRESSURE BY NEURAL NETWORK WITH BISPECTRUM","authors":"Hiyori Yoshino, Noriaki Hashimoto, Yoshihiko Ide, Koji Kawaguchi, Masao Mitsui","doi":"10.9753/icce.v37.waves.21","DOIUrl":"https://doi.org/10.9753/icce.v37.waves.21","url":null,"abstract":"The Nationwide Ocean Wave Information Network for Ports and Harbors (NOWPHAS) conducted by the Port and Harbor Bureau of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) in Japan, uses a Doppler Wave Meter (DWM) as a standard equipment for wave observation. Depending on the situation, the system supplements the missing data by estimating surface waves based on water pressure data as appropriate. Meanwhile, in the case of cargo handling in harbors, the significant wave height is generally used as a criterion. It has been reported that even under conditions where wave heights are considered calm, there are many cases where large ship motions occur, causing problems with cargo handling operations. Since large ship motions occur when the long-period wave component is close to characteristic period of the vibration system consisting of the hull and mooring cables, it is necessary to examine the frequency domain based on spectra instead of the significant wave height. Therefore, in this study, the frequency-domain analysis was used as the basis for the estimation of surface waves from bottom pressure waves. The transfer function that relates the two wave quantities is estimated to convert the pressure wave to a water surface wave. The purpose of this study is to develop a method for estimating surface waves that can be used not only during storms, but also for examining the marginal loading wave conditions for long period waves at all times.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

INFRAGRAVITY WAVES AT A TIDAL INLET 潮汐入口处的次重力波

Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.33

Ad Reniers, Floris de Wit, Marion Tissier, Dirk Rijnsdorp

引用次数: 0