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Lookup NU author(s): Professor Zhiqiang Hu, Dr Zaoyang Guo
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
In case of a four-screw ship, the propellers show different hydrodynamics performance due to the asymmetric distribution of the wake. And the particularity of the scale effect on wake field for this type of ship would make a more complicated characteristics on propeller bearing force. In this paper, a numerical simulation study of scale effect on propeller unsteady bearing force of a four-screw ship was performed by employing RANS method. The load variation of the single-blade is analyzed to understand the fluid mechanism of the interaction between the propeller blade and wake flow. The larger wake field difference between inside and outside propeller disk aggravates the unbalanced load distribution for the full-scale ship. The results of propeller bearing force highlight that the fluctuation values of full-scale ship are smaller than those of model one. Moreover, the scale effect of outside propeller is strong with respect to the inside one. The above findings can provide theoretical guidance for load balancing and vibration reduction of the four-screw ships
Author(s): Sun S, Hu Z, Wang C, Guo Z, Li X
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Year: 2021
Volume: 229
Print publication date: 01/06/2021
Online publication date: 18/04/2021
Acceptance date: 04/04/2021
Date deposited: 05/04/2021
ISSN (print): 0029-8018
ISSN (electronic): 1873-5258
Publisher: Elsevier
URL: https://doi.org/10.1016/j.oceaneng.2021.108974
DOI: 10.1016/j.oceaneng.2021.108974
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