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Title
Practical approach to calculating the hydrodynamic oscillating loads of a ship propeller under non-uniform wake field

ISSN printed: 1733-8670, ISSN on-line: 2392-0378
Ghassemi, Hassan1
URI: https://repository.am.szczecin.pl/handle/123456789/2510
2018-12-18
Propellers usually operate in the ship’s stern, where the inflow of the non-uniform wake generates oscillating loads and changes the hydrodynamic performance. Therefore, determination of the forces on propellers and hydrodynamic performance due to a non-uniform wake field are the challenging problems for naval architects and hydrodynamists. The main objectives of the present study are to assess the hydrodynamic performance for a single blade and all the blades. The propeller is a B-series propeller under non-uniform wake field behind the Seiun-Maru (hereafter SM) ship hull. A practical approach is employed to calculate the hydrodynamic oscillating loads of the ship propeller under a non-uniform wake field. Results of the computations on the propeller behind the SM ship, due to a non-uniform wake field, are presented and analyzed using classical mathematical methods over a single cycle. The results show that a variation of thrust with the discussed parameters is the same as that shown for torque, also the blade-frequency of the total force, thrust and torque is an increasing function of radial sections, whereas these parameters decrease with increasing radial blade sections.
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Title

Practical approach to calculating the hydrodynamic oscillating loads of a ship propeller under non-uniform wake field

Pages

9-20

Figures

10

Tables

0

ISSN printed

1733-8670

ISSN on-line

2392-0378

DOI

10.17402/308

Type

Original scientific article

Journal

56 Scientific Journals of the Maritime University of Szczecin, no. 56 / 2018

Publisher

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Copyright Holder

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Published

2018-12-18

Recieved

2018-03-25

Accepted

2018-05-16

Funding

No data

Keywords

hydrodynamic performance, non-uniform wake, oscillating thrust and torque, practical approach, ship propeller, ship design

URI:

https://repository.am.szczecin.pl/handle/123456789/2510

Language

English

Authors

Ghassemi, Hassan1

Affiliation

1 Amirkabir University of Technology (AUT), Department of Maritime Engineering Hafez Ave, No. 424, P.O. Box 15875-4413, Tehran, Iran, gasemi@aut.ac.ir

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