CFD based form factor determination method

Par Conseil national de recherches du Canada

Télécharger	Voir la version finale : CFD based form factor determination method (PDF, 8 Mo)
DOI	Trouver le DOI : https://doi.org/10.1016/j.oceaneng.2020.108451
Auteur	Rechercher : Korkmaz, Kadir Burak Identifiant ORCID : https://orcid.org/0000-0001-7136-7932; Rechercher : Werner, Sofia; Rechercher : Sakamoto, Nobuaki; Rechercher : Queutey, Patrick; Rechercher : Deng, Ganbo; Rechercher : Yuling, Gao; Rechercher : Guoxiang, Dong; Rechercher : Maki, Kevin; Rechercher : Ye, Haixuan; Rechercher : Akinturk, Ayhan¹; Rechercher : Sayeed, Tanvir¹; Rechercher : Hino, Takanori; Rechercher : Zhao, Feng; Rechercher : Tezdogan, Tahsin; Rechercher : Demirel, Yigit Kemal; Rechercher : Bensow, Rickard
Affiliation du nom	Conseil national de recherches du Canada. Génie océanique, côtier et fluvial
Format	Texte, Article
Titre de la revue	Ocean Engineering
ISSN	0029-8018
Volume	220
Numéro	15 January 2021
Numéro d'article	108451
Pages	1–16
Sujet	ship resistance; form factor; CFD; scale effects; combined CFD/EFD methods; experimental uncertainty analysis
Résumé	The 1978 ITTC Power Prediction method is used to predict the propulsive power of ships through towing tank testing. The form factor approach and its determination in this method have been questioned. This paper investigates the possibility to improve the power predictions by introducing Combined CFD/EFD Method where the experimental determination of form factor is replaced by double body RANS computations applied for open cases KVLCC2 and KCS, including first-time published towing tank tests of KVLCC2 at ballast condition including an experimental uncertainty analysis specifically derived for the form factor. Computations from nine organisations and seven CFD codes are compared to the experiments. The form factor predictions for both hulls in design loading condition compared well with the experimental results in general. For the KVLCC2 ballast condition, majority of the form factors were under-predicted while staying within the experimental uncertainty. Speed dependency is observed with the application of ITTC57 line but it is reduced with the Katsui line and nearly eliminated by numerical friction lines. Comparison of the full-scale viscous resistance predictions obtained by the extrapolations from model scale and direct full-scale computations show that the Combined CFD/EFD Method show significantly less scatter and may thus be a preferred approach.
Date de publication	2021-01-12
Maison d’édition	Elsevier
Licence	Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Langue	anglais
Publications évaluées par des pairs	Oui
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Identificateur de l’enregistrement	03959f96-ff28-4df6-b4ca-c2d82a0599b6
Enregistrement créé	2021-02-11
Enregistrement modifié	2021-02-11

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Date de modification:: 2021-02-28