The impact of propulsion factors on vessel performance in waves

Bhushan Taskar, Pelle Bo Regener, Poul Andersen

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    Abstract

    This paper investigates the effect of varying propulsion factors (wake fraction, thrust deduction, relative rotative efficiency) due to waves on overall vessel performance. Four different ships have been considered where experimental values of propulsion factors in waves are available. Simulations have been performed for a realistic transpacific journey to compute variation in propulsion factors and efficiencies due to waves in realistic operating conditions. The predicted energy consumption was found to vary from -12% to +4% as a result of changes in propulsion factors due to waves. The propulsion efficiency is significantly affected in the presence of waves so it is important to include the effect of changes in propulsion factors, especially thrust deduction and wake fraction, for accurate vessel performance prediction.
    Original languageEnglish
    Publication date2019
    Number of pages8
    Publication statusPublished - 2019
    EventSixth International Symposium on Marine Propulsors (smp'19) - Roma Centro Hotel, Rome, Italy
    Duration: 26 May 201930 May 2019

    Conference

    ConferenceSixth International Symposium on Marine Propulsors (smp'19)
    LocationRoma Centro Hotel
    Country/TerritoryItaly
    CityRome
    Period26/05/201930/05/2019

    Keywords

    • Vessel performance
    • Propulsion inwaves
    • Varying propulsion factors

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