Full-scale CFD simulations for the determination of ship resistance as a rational, alternative method to towing tank experiments - Publikacja - MOST Wiedzy

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Full-scale CFD simulations for the determination of ship resistance as a rational, alternative method to towing tank experiments

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Results of ship resistance predictions obtained from towing tank experiments are affected by the method used to extrapolate from a model scale to a ship scale. Selection of method to determine a form factor is subjective and the extrapolation method is accurate for typical hull forms. For innovative hull forms the proper method for calculating the form factor is questionable. Moreover, the influence of the extrapolation method can be equally as important as the influence of a redesigned hull form itself. The paper presents novel numerical and experimental methods used to predict ship's total resistance in calm water. The results determined by towing tank experiments, full-scale CFD simulations and ship's sea trial measurements were compared. Depending on the method used, the determined form factor differed by 19%. As a result, the predicted calm water resistance varied from −6% to 11% relatively to sea trials data. For innovative hull forms in particular, full-scale CFD simulations should support the towing tank method. The results calculated by full-scale CFD varied from −10% to 4% relatively to sea trials data depending on the assumptions on hull roughness and turbulence model. The towing tank testing and full-scale CFD simulations can provide similar accuracy.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
OCEAN ENGINEERING nr 190,
ISSN: 0029-8018
Język:
angielski
Rok wydania:
2019
Opis bibliograficzny:
Niklas K., Pruszko H.: Full-scale CFD simulations for the determination of ship resistance as a rational, alternative method to towing tank experiments// OCEAN ENGINEERING -Vol. 190, (2019),
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.oceaneng.2019.106435
Źródła finansowania:
Weryfikacja:
Politechnika Gdańska

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