Presentations Overview

Higher design waves and water levels, including the effects of sea level rise, present determining loads for drawing up the strength and stability of the discharge sluices in the Afsluitdijk. One of these loads is the wave impact load on the gates, supporting beams and bridge decks. At first, these ...

Physical modelling case studies

Tsunami events are traditionally represented in the geological record by a sequence of fine-grained sediments, but increasingly coastal boulder deposits are being used as indicators of past tsunami events. The emplacement mechanism of many boulder deposits, however, is heavily debated and determinin...

Tsunami hydrodynamics, impacts, and mitigation

Rock bags are a product developed in 1987 by Kyowa in Japan to protect against erosion from hydraulic processes in riverine, lake, coastal and marine environments. Within Australasia, the rock bags are imported and distributed by Bluemont Pty Ltd. However, the behaviour of rock bags in shallow water...

Coastal and ocean structures, breakwaters, revetments

Single layer randomly placed armour units are used in many rubble mound breakwaters around the world. For these armour layers, breakage of armour units due to rocking could be a major damage mechanism, but no good methods exist to evaluate and quantify rocking. The aim of the study is to quantify th...

Laboratory technologies, measurement systems

Living shorelines are a form of Nature-based Solutions, which incorporate natural elements that provide flood and erosion risk management benefits. Climate change impacts are increasingly motivating communities in Canada to consider incorporating living shorelines in coastal protection schemes. Few ...

Coastal flooding, flood prevention, shore protection

Coastal forests are considered a sustainable and economical solution to mitigate inundations from tsunamis. Owing to the rare occurrence of tsunamis and reported local tsunami heights being small, the coastal forests are a potential solution to protect from tsunamis in the Arabian Sea. The potential...

Tsunami hydrodynamics, impacts, and mitigation

The coastal structures allow the wave overtopping. However the extreme wave overtopping could cause damages on rear slope. The most of the researches for the armor stability were about on the sea side slope of rubble mound structures. van Gent (2007) performed the experiments about the stability of ...

Coastal and ocean structures, breakwaters, revetments

Physical modelling tests were conducted in a wave flume of Artelia's hydraulic laboratory to study the hydraulic response/stability of a rubble mound breakwater with non-standard core composed of crushed concrete blocks. This design carried out by EDF was initiated in response to develop a high perm...

Physical modelling case studies

The presence of marine pollutants such as marine plastics has increased significantly over the last decades and poses a major environmental problem, in both the coastal and offshore area. The fundamental fluid mechanics processes associated with marine transport are often not resolved in large-scale...

Laboratory technologies, measurement systems

The GPMDLR has requested to ARTELIA the preliminary design studies for the enlargement of the containers terminal in Port East (La Réunion). In the frame of the studies, the laboratory of ARTELIA has carried out in 2D physical model testing to evaluate the behavior of caissons exposed to cyclonic w...

Wave-structure interactions, loading, response

Prof. Heidi Nepf leads a lab at MIT, where she studies the interaction of waves and current with aquatic vegetation and the feedbacks to sediment transport. She and her group develop models for physical processes that determine how vegetated habitats (green infrastructure), such as seagrasses, salt ...

Monday Workshop

Wave Energy Converters (WECs) placed in an array configuration change the incident wave field due to radiation and diffraction. These are the so-called near- and far-field effects of WEC farms. This study investigates these effects for an array of up to five heaving point absorber WECs, that was tes...

Wave and tidal energy

Nature-based flood defences receive increasing interest as a viable option for improving flood safety worldwide. A contemporary case is using the ability of saltmarshes to attenuate waves during storm conditions for strengthening coastal flood defences. To ensure a long-term reinforcement of flood p...

Coastal hydrodynamics, coastal processes

The results of an experimental investigation to analyze the water flow, the stability of the pieces and the reflectioncoefficient of a slope of concrete cubes placed in an organized way, paving stone style, together with larger blocks to increaseits overall roughness, are presented.The experiment wa...

Wave-structure interactions, loading, response

The west coast of Sri Lanka faced erosion for the last few decades as a result of intensive sand mining and climate change. The limits of erosion were quantified and assessed through field measurements for a stretch of 18km. The history of shoreline change and the results of field measurements of th...

Coastal field measurement and monitoring

Many modern trends facilitate the need for the further development of systems that mitigate impacts of coastal flood hazards and promote resilience of nearshore communities and ecosystems. Mangroves and other natural coastal defenses have the potential to augment traditional engineered coastal struc...

Coastal flooding, flood prevention, shore protection

In the last three decades, an extensive literature has documented different concrete mixtures and supplementary cementitious materials (SCMs) to reduce CO2 emissions from concrete production. Recent findings show the importance of low pH concrete for improved marine life on the structure, and identi...

Coastal and ocean structures, breakwaters, revetments

Recently, there has been a rise in the combination of green/hybrid solutions to coastal protection, but effects of natural systems on overtopping performance is uncertain. Accounting for numerous factors related to climate change, coastal protection systems have become vital for the survivability of...

Climate change impacts, adaptation, mitigation

Point absorber wave energy converters (WECs) closely placed in array hydrodynamically interact through wave radiation and diffraction. The power absorption by these WECs is optimised by altering the WEC dynamics through the control of the Power Take-Off (PTO). As the WEC dynamics are changed, the hy...

Wave and tidal energy

Ship propellers generate high-flow velocities near quay walls, posing risks of bed scour and structural instability. A joint effort by CROW and the Dutch Government aims to refine bed protection design. This research program combines field measurements, scale model tests, and numerical modeling. At ...

Physical modelling case studies

Riparian forests in front of dikes can dampen incoming waves and thereby contribute to flood safety. In real-scale flume experiments with live pollard willow trees (forming a 40-m-long forest), it was observed that during storm conditions, a maximum reduction of 20 % in incoming wave height could be...

Modelling Nature

Hybrid artificial reef structures can be designed to promote the development of a self-sustaining habitat for reef organisms while simultaneously enhancing the extent to which they provide coastal protection. In this study we investigate the wave attenuation capacity of engineered porous oyster reef...

Modelling Nature

Low-crested detached breakwaters, vital for coastal protection, face scour challenges due to wave-structure-seabed interactions. This study advances the understanding of scour near detached rubble-mound breakwaters. Using a 3D mobile bed physical model at the University of Porto, various hydrodynami...

Sediment transport, erosion, sedimentation, scour

The site of Grangettes, registered as a natural reserve of national and international importance for waterfowl and migratory birds, is the last part of the Swiss lakeshore of Lake Geneva that remains natural. Because of repetitive localized dredging activities of the shoreline since the last century...

Coastal field measurement and monitoring

The results of the analysis of the wave measurement campaigns on the Pacific coast of Costa Rica are presented. After analyzing more than 14000 spectral shapes from sea states, it has been determined that many of them present 2 or more swell peaks, so it was proposed to perform a wave characterizati...

Coastal field measurement and monitoring

The Qiantang River is a typical strong tide estuary, the world-famous tidal bore have huge turbulent energy causes damage to the sea wall. Spur dike is an important engineering to prevent the seawall foundation from tidal bore. But the tidal bore occurs at the low tide level, strong turbulence, high...

Coastal flooding, flood prevention, shore protection

This work introduces a novel open-source experimental database focused on the dynamic response of a moored floater under regular and focused waves. The database provides detailed information about the motion of a cylindrical body anchored with two distinct mooring configurations: one with four evenl...

Wave-structure interactions, loading, response