Numéro : 2811 - Year : 2025
Dynamic simulation platform for wind assisted ships
Sébastien LE BOUTEILLER, Malo TARPIN, Pierre MONTFORT - Ose Engineering – France
The growing emphasis placed on reducing green-house gas emissions of shipping has created a renewed interest for wind propulsion systems (WPS) for merchant ships. Modern WPS are expected to autonomously contribute to the propulsion of the ship without substantial added human workload. The design of a distributed control system (DCS) for WPS is faced with many technical challenges. On the one hand, unsteady effects -- such as dynamical stalling -- are inherently present due to the high turbulence level of the wind and the ship motions, which limits the usefulness of steady-state simulation method. On the other hand, the complexity of the system (composite, multi-physics and multi-scale) makes it out of reach of high-fidelity simulations. There is thus a urgent need for lowfidelity and modular simulation tools for assessing the impact of DCS design choice on performance. In this communication we present the Wind-Assistance Simulator tOol (WASO) platform developed at OSE Engineering to answer this need. Ship motions and spatio-temporal wind profile from a turbulent wind model are used as input for a 3D non-linear lifting-line odel enhanced with a dynamical stall model to compute aerodynamic forces. We illustrate the capabilities of WASO by showing how WPS performance are affected by wind turbulence.
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