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Performance prediction of wind propulsion systems using 3D CFD and route simulation
RISE Research Institutes of Sweden, Safety and Transport, Maritime department.ORCID iD: 0000-0003-4500-4462
SSPA Sweden AB, Sweden.ORCID iD: 0000-0002-5364-4948
SSPA Sweden AB, Sweden.
SSPA Sweden AB, Sweden.ORCID iD: 0000-0002-6266-2320
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2019 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Accurate performance prediction is necessary when designing/optimising wind propulsion systems (WPS). An independent, trustworthy prediction of the energy-saving potential is also needed to support the ship owner’s decision to invest in new technology. By using weather statistics along with a mathematical model of ship performance, route simulations can estimate the time and power required for transit of a route. Such simulations are commonly used today to optimise the design and operation of conventional ships. The introduction of WPS poses additional challenges for route simulations. WPS performance must be predicted at all points along the route, with wind of differing velocity and direction. The apparent wind will vary vertically (twist), due to the interaction between the ship velocity and the atmospheric boundary layer. Also, many proposed concepts use multiple WPS, introducing additional complexity, such as independent spin ratios/ sheeting angles. 3D CFD simulations capture the complex physics, including vortex formation and interaction effects, providing accurate performance prediction and an understanding of the flow. However, 3D CFD is costly, and it would not be possible to simulate all conditions at a reasonable cost. We present simplified approaches to modelling of WPS, using a limited number of CFD simulations, either in 2D or 3D, which are then extrapolated such that 3D effects are represented, and all conditions covered. The methodology is demonstrated on rotor sails and wing sails.

Place, publisher, year, edition, pages
Royal Institution of Naval Architects , 2019. p. 19-30
Keywords [en]
Atmospheric boundary layer; Computational fluid dynamics; Energy conservation; Forecasting; Ships; Vortex flow, Accurate performance; Design and operations; Energy saving potential; Interaction effect; Performance prediction; Propulsion system; Ship performance; Vortex formation, Ship propulsion
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:ri:diva-71798Scopus ID: 2-s2.0-85083895263OAI: oai:DiVA.org:ri-71798DiVA, id: diva2:1838166
Conference
6th International Conference on Computational Methods in Marine Engineering, MARINE 2015 ; Conference Date: 15 June 2015 Through 17 June 2015;
Available from: 2024-02-15 Created: 2024-02-15 Last updated: 2024-02-15Bibliographically approved

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Persson, AdamLi, Da-QingWerner, Sofia

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CiteExportLink to record
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