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Lookup NU author(s): Sayyad Najafi, Professor Pengfei LiuORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
To design a propeller for ship power plant, the interaction between ship hull and propeller must be taken into account.The main concern is to apply the wake effect of ship stern on the propeller performance. In this paper, a coupledBEM (Boundary Element Method)/RANS (Renolds-Averaged Navier−Stokes) solver is used to simulate propellerbehind the hull in the self-propulsion test. The motivation of this work is to develop a practical tool to design marinepropulsion system without suffering long computational time. An unsteady boundary element method which is alsoknown as panel method is chosen to estimate the propeller forces. Propeller wakes are treated using a time marchingwake alignment method. Also, a RANS code coupled with VoF equation is developed to consider the ship motionsand wake field effects in the problem. A coupling algorithm is developed to interchange ship wake field to the potentialflow solver and propeller thrust to the RANS code. Based on the difference between hull resistance and the propellerthrust, a PI controller is developed to compute the propeller RPM in every time step. Verification of the solver is carriedout using the towing tank test report of a 50 m oceanography research vessel. Wake factor and trust deduction coefficientare estimated numerically. Also, the wake rollup pattern of the propeller in open water is compared with the propellerin real wake field.
Author(s): Najafi S, Pourmostafa M, Liu P
Publication type: Article
Publication status: Published
Journal: China Ocean Engineering
Year: 2024
Volume: 38
Issue: 4
Pages: 424-438
Print publication date: 24/06/2024
Online publication date: 24/06/2024
Acceptance date: 17/03/2024
Date deposited: 10/06/2024
ISSN (print): 0890-5487
ISSN (electronic): 2191-8945
Publisher: Haiyang Chubanshe, Ocean Press
URL: https://doi.org/10.1007/s13344-024-0034-x
DOI: 10.1007/s13344-024-0034-x
ePrints DOI: 10.57711/jg2q-9x05
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