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Kraskowski M.,Ship Design and Research Center | Zawadzki K.,Vistal Wind Power Ltd. | Rylke A.,Vistal Wind Power Ltd.
Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012 | Year: 2012

The paper presents a proposal of the method for analysis of the moored wind turbine's float seakeeping, elaborated by Ship Design and Research Centre S.A. for the purpose of the project realized for VISTAL WIND POWER Ltd. The analysis started with preliminary seakeeping prediction realized with the use of CFD solver coupled with 6DOF module, in which the sliding mesh approach was used to handle the moving object. The numerical analysis included modelling the characteristics of the mooring tethers with equivalent force approach (such an approach was presented e.g. by Pascoal et al. [1]). Evaluation of the tether characteristics was realized numerically with the use of lumped mass method. As the results of numerical study revealed satisfactory performance of the proposed wind turbine float design, further experimental tests of the physical model of the float were realized. The mooring tethers were modelled by direct scaling of the full scale tethers, which prevented truncation errors and allowed for direct validation of the numerical analysis. The paper is focused on the reliability and accuracy of the numerical methods used in the analysis of slender moored object. Source

Kwapisz L.,Szewalski Institute of Fluid Flow Machinery | Maurin A.,Szewalski Institute of Fluid Flow Machinery | Jakubowski P.,Ship Design and Research Center
Vibrations in Physical Systems | Year: 2016

The approach to numerical modelling of sound transmission through window type partitions is investigated in the paper. The laboratory conditions of reverberation room are simulated. The numerical and experimental results are compared. The impact of different model parameters on the sound insulation levels are evaluated. © 2016, Poznan University of Technology. All rights reserved. Source

Dymarski P.,Ship Design and Research Center | Dymarski C.,Technical University of Gdansk
MARINE 2011 - Computational Methods in Marine Engineering IV | Year: 2011

This document provides a description of the numerical method for modelling the energy buoy motion on wave. Computational results were compared with results obtained from model tests carried out on model basin. Source

Kowalczyk S.,Ship Design and Research Center | Felicjancik J.,Ship Design and Research Center | Felicjancik J.,Technical University of Gdansk
Ocean Engineering | Year: 2016

The standard propeller has been investigated in model scale, using medium size cavitation tunnel. The hydroacoustic characteristics of propellers under different loading conditions have been investigated. Additionally the presented experimental results have been used for the verification of applied numerical approach. During both numerical and experimental analyses non-uniform inflow propeller's conditions have been adapted. Good correlations of both kinds of results have been noticed and highlighted. © 2016 Elsevier Ltd. Source

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