Metocean conditions for the design of a floating power plant

Nouméa - New Caledonia

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Client : Nouvelle Calédonie Energie

Date of completion : 2021

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  Modelling inside the lagoon

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  Study area in the Nouméa Bay

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)

Wind structure modelling thanks to the Holland parametric model