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16 items found for ""

  • Metocean conditions for the design of a floating power plant

    Nouméa - New Caledonia Client : Nouvelle Calédonie Energie Date of completion : 2021 In the purpose of the design of the new floating power plant of Noumea deemed to be installed in the Bay, Globocean has performed a metocean desktop study in order to assess the non-cyclonic and cyclonic extreme winds , waves, currents and sea levels expected in the study area. The following steps were followed for the realization of this study : Implementation of a high resolution wind model inside the lagoon of Noumea (CFD software MeteoDyn) Set-up of a parametric cylonic wind model (Holland empirical formulation) Modelling of the offshore swell (software WaveWatchIII) Implementation and execution of a wave propagation model within the lagoon taking into account the wave breaking effect on the coral belt Implementation and execution of a 3D hydrodynamic model in the lagoon of Noumea Assessment of the non-cyclonic and cyclonic extreme conditions at the pre-defined study points (EVA sofware, POT methodology)

  • Impact study of sediment dumping at sea

    Capbreton (France) Client : Communauté de communes de Maremnes Adour Côte-Sud (MACS) Date of completion : 2020 - 2021 In order to study the environmental impact of sediment dumping off Capbreton, Globocean has performed the numerical modelling of the sediment plumes and seabed accumulations. The following steps were followed during the realization of this study : Numerical modelling of the offshore waves, Hydro-sediment modelling of the sediment concentrations and seabed accumulations, Study of the sediment plume spreading according to meteorological scenarios, Simulations of sediment dumping operations and analysis of the impact on the sensitive areas.

  • Study of the vulnerability to natural coastal hazards

    Region of Rabat-Salé-Kenitra (Morocco) Client : MDC Ingénierie Date of completion : 2019/2023 In order to realize an overview of the coastal natural risks to which is exposed the region of Rabat-Salé-Kenitra in Morocco and imagine further protective solutions, Globocean has been requested by MDC Ingénierie to assess the vulnerability of the coastal strip to natural hazards of erosion, sand accumulation, and marine submersion. The following tasks were successively achieved during realization : Modeling of offshore sea states (software WaveWatchIII) Wave propagation up to the shoreline (software SWAN) Modelling of the coastal currents (software Telemac2D) Sediment transport assessment by numerical modelling (softwares Telemac/Sysiphe) Study of marine submersion by numerical modelling (software Telemac 2D) GIS mapping of the vulnerability of the coastal strip to erosion and marine submersion hazards (software Qgis)

  • Wave, current and sea level conditions for the desalination plant of Sfax

    Sfax (Tunisia) Client : Sogreah Gulf Date of completion : 2021-2022 For the study of the stability of intake and exhaust pipelines of the desalination firm of Sfax, Globocean has conducted a study in order to assess the wave, current, and storm surges along theses pipelines. The following tasks were successively performed : Modelling of offshore sea-states (software WaveWatchIII Modelling of currents and sea levels in the project area (hydrodynamic softwareTelemac2D) Preparation of the atmospheric and astronomic inputs of the hydrodynamic model Validation current measurement within the project area (metocean survey) Extreme analysis of sea-states and storm surges conditioned to the sea level (Uni-variate extreme value analysis)

  • Assessment of extreme cyclonic swell for the mapping of wave submersion hazard in French Polynesia

    Tahiti, Moorea, and Bora-Bora (French Polynesia) Client : BRL Ingénierie Date of completion : 2021 For the elaboration of a hazard mapping of wave submersion in several island of French Polynesia, Globocean performed a specific cyclonic study based on dedicated numerical modelling and wind and wave observations by satellite. The following steps were performed for this study: Assessment of synthetic extreme cyclones by bi-variate extreme analysis (KDE iso-probable curves) Elaboration of the cyclonic atmospheric structure (parametric model of Holland) Modelling of the offshore cyclonic swell (software WaveWatchIII) Validation against satellite observations of cyclonic waves Modelling of the propagation of the cyclonic waves around the islands (software SWAN)

  • Project of forecasting of urban sea and river flooding

    Banyuls and Argelès-sur-Mer, Occitanie (France) Client : Région Occitanie Date of completion : 2020-2023 Globocean, associated to its industrial partner Seanaps-Advanced, has been awarded funding for the realization of a project of forecasting of marine submersion and river flooding, bidding at a call for project emitted by the region 'Occitanie' in the South of France. This project has been including the installation in both cities of Banyuls and Argelès-sur-Mer of an urban totem for information and education of the local population and tourists about the coastal hazards. In this context, the missions performed by Globocean have been : The implementation of a numerical model of sea water and river flooding (software Telemac2D) The modelling of maritime forcing in forecast (sea states models + Eurocode formulations for the estimation of overtopping flows) The integration of forecasts of rainfall rates and river flows as inputs in the flooding modelling The development of a routine prediction system for the automatic execution of the computing processing The installation of the routine prediction system and all the softwares in a remote server, with automatic sending of resulting flooding maps in forecast

  • Analysis of the stability of the exhaust pipe of the water treatment plant of Cap-Sicié

    Toulon (France) Client : Bonna TP Date of completion : 2022-2023 For an execution study, Globocean has assessed the hydrodynamic forces expected to apply on the exhaust pipeline of the water treatment plant of Cap-Sicié at Toulon once every fifty years on average, for the design of the ballasts in order to ensure its stability. The following tasks were successively performed : Modelling of the offshore sea states (software WaveWatchIII) Assessment of the extreme waves expected once every fifty years, by direct extreme value analysis (uni-variate EVA software) Propagation of the 50-yr extreme sea-states in the nearshore area (software SWAN) Modelling of the orbital velocities and accelerations (numerical wave flume model IH2VOF) Derivation of extreme drag, inertial, and lift hydrodynamic forces (Morisson formulation), and advice about the ballast weight to consider for the stability of the exhaust pipeline

  • Extreme wave height and storm surges for the design of the oil terminal of Djibouti

    Djibouti (Republic of Djibouti) Client : Somagec Date of completion : 2020 Globocean has performed a metocean study for the assessment of the extreme waves and sea levels, for the design of the new oil terminal of Djibouti. The following steps were followed for the realization of this study : Definition of extreme synthetic cyclone patterns (wind parametric mode of Holland) Modelling of the offshore cyclonic swell (software WaveWatchIII) Cyclonic swell propagation in the nearshore area up to the location of the oil terminal (software SWAN on an unstructured grid) Currents and sea levels modelling (hydrodynamic model Telemac2D) Synthesis of the extreme cyclonic conditions around the oil terminal

  • Extreme sea-states, wave disturbance, and sediment dynamics studies for the design of the harbour

    New Harbour of DAKHLA ATLANTIQUE (MOROCCO) Client : MDC Ingénierie Date of completion : 2018 - 2020 For the design of the new harbour of Dakhla (Morocco), GLOBOCEAN has conducted metocean studies for the assessment of the extreme waves expected for the design of the breakwaters, of the wave disturbance within the harbour basins and the assessment of operability at berth, and of the sediment dynamics for the harbour maintenance and the evaluation of its impact in the vicinity. The different steps followed for the realization of this study, based on numerical modelling, are listed herebelow: Numerical simulation of the offshore waves (WaveWatchIII software) Extreme wave propagation up to the harbour structures and along the causeway (SWAN software, unstructured) Modelling of wave agitation within the harbour basins (ARTEMIS software) Numerical simulations of the hydro-sediment dynamics in order to assess the extreme currents expected along the harbour structures and its causeway, as well as the sea bottom changes (CMS-FLOW software) Assessment of the impact of the harbour on the coastline in the vicinity, detection of schemes of erosion or accumulation of sediments (GENESIS software)

  • Preliminary design of a floating photovoltaic solar farm

    Assessment of wind and wave statistical conditions for the preliminary design of a floating photovoltaic solar farm - Gulf of Lion (FRANCE) Client : SolarInBlue Date of completion : 2020 For a feasibility study of installation of floating photovoltaic farms along the Mediterranean coastline, Globocean has defined the wind and wave statistical conditions at each grid point of an unstructured model, and in a second step a more accurate assessment of the wind and wave regimes expected at 2 specific locations identified as potential spots of interest. The following missions have been realized during this study: Offshore wave modelling in the Gulf of Lion (WaveWatchIII software) Wave propagation in the nearshore area (SWAN software) Validation of the nearshore wave modelling against coastal buoys measurements (Candhis buoy network) Extreme statistical analysis of winds and waves (EVA software) Usual statistics of the main wave regime Production of wind and wave statistical quantiles in grid point Accurate analysis of the wind and wave statistical conditions for 2 potential spots of interest

  • Wind and Wave conditions for the wind farm project off Dunkirk

    Dunkirk (FRANCE) Client : ARTELIA Date of completion : 2017 Globocean has performed a metocean desktop study for the design of the offshore wind turbines deemed to be installed off Dunkirk. The following missions were performed by Globocean : Numerical modelling of the wave generation at oceanic scale (WaveWatch III software) Configuration and execution of the wave propagation model (SWAN software) Assessment and integration of the tidal levels and currents in the wave propagation modelling Validation of the wave modelling thanks to in-situ wave buoys (Candhis network) Assessment of the local wind regime Statistical analysis of the main wave regime (wave rose) and wind parameters on site (wind shear, vertical variation of the wind speed and direction, turbulence intensity) Liens : https://parc-eolien-en-mer-de-dunkerque.fr/

  • Wind and wave regimes for the design of an offshore wind farm

    Groix & Belle-Ile (FRANCE) Client : ARTELIA Date of completion : 2014 - 2016 Globocean has performed an assessment of the wind and wave statistical conditions between the islands of Groix and Belle-Ile (Brittany) for the design of a floating wind farm. The following missions have been successfully performed by Globocean : Numerical simulation of the offshore swell (WaveWatchIII software) Wave propagation within the wind farm area (SWAN software) Validation of the wave modelling thanks to buoy in-situ measurements (local survey) Extreme statistical processing of the sea-states (uni-variate extreme analysis by EVA process and bi-variate by KDE contour plots) 1D and 2D spectral characterization

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