Posters - WindEurope Annual Event 2024

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Come meet the poster presenters to ask them questions and discuss their work

We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in the academic community. We look forward to seeing you there!

PO081: How does atmospheric stability affect power production of a shared mooring system?

Irene Rivera Arreba, DNV


To harness the kinetic energy from higher wind speeds using floating wind turbines (FWTs), these structures are aimed to be installed further offshore into deeper waters. However, as the water depth increases, the cost of to the mooring system becomes more significant. DNV estimates that to meet the forecasted growth of floating wind towards, more than 70000km of mooring line would be needed. One of the viable solutions to bring down the mooring system's cost is by means of sharing the mooring system components, such as the anchoring or the mooring line itself. The former approach of having a shared anchoring system has already been implemented in Hywind Tampen, recently installed. However, the second approach where the mooring lines are shared is still under development. A preliminary research study on pilot-scale floating wind farms (Connolly and Hall, 2019), where the NREL 5MW wind turbine was investigated, suggested that, for a spacing of 10 rotor diameters between floating wind turbines, shared mooring lines became cost-effective from 400m on. The current work aims to showcase the effect of shared mooring on power production, based on a simplified configuration. Additionally, the combined effect of atmospheric stability and wake meandering on a shared mooring line connecting two semisubmersibles INO12 (Souza et al. 2021) platforms, separated 8 rotor diameters, is studied. Three environmental conditions (below-, close-to- and above-rated mean wind speed), each for stable, neutral, and unstable atmospheric stability conditions, are analysed. The power production of the shared system is compared to the one of the original system (not shared mooring, but the same spacing).

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