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Jo?ko Parunov, Marta Pedi?ic-Buca, Inno Gatin and Ivan Catipovic
This paper deals with the resistance, towing, seakeeping, and open water propeller tests of an innovative tourist submarine model. Tests were performed in a 276 m long towing tank. As the submarine model is a complex structure composed of various parts a...
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Carlo Giorgio Grlj, Nastia Degiuli, Andrea Farkas and Ivana Martic
The present study aims to investigate the scale effects of the open water propeller performance using computational fluid dynamics (CFD). The results are presented for the propeller which was previously 3D scanned and digitized. The results obtained usin...
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Peter Förster, Bekir Yildiz, Thomas Feuerle and Peter Hecker
Aircraft emissions represent a relevant amount of human induced CO2. Globally, up to 2.5 per cent of such emissions stem from the aviation industry. In order to investigate the effects within the atmosphere, realistic flight profiles are necessary to pro...
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João Baltazar, Douwe Rijpkema and José Falcão de Campos
In this study, a Reynolds averaged Navier-Stokes solver is used for prediction of the propeller performance in open-water conditions at different Reynolds numbers ranging from 104
10
4
to 107
10
7
. The ??-??
k
-
?
SST turbulence model and the ??-R~e??...
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Ville Viitanen, Timo Siikonen and Antonio Sánchez-Caja
In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. The simulations were carried out using a homogeneous compressible two-phas...
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Noriyuki Sasaki, S. Kuribayashi, M. Fukazawa and Mehmet Atlar
This paper presents an investigation on the scale effects associated with the powering performance of a Gate Rudder System (GRS) which was recently introduced as a novel energy-saving propulsion and maneuvring device. This new system was applied for the ...
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Wenyu Sun, Qiong Hu, Shiliang Hu, Jia Su, Jie Xu, Jinfang Wei and Guofu Huang
Accurate prediction of the self-propulsion performance is one of the most important factors for the energy-efficient design of a ship. In general, the hydrodynamic performance of a full-scale ship could be achieved by model-scale simulation or towing tan...
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Da-Qing Li, Per Lindell and Sofia Werner
Unexpected low value of the relative rotative efficiency ?R is sometimes noted when scaling the towing tank model-test result with the ITTC-78 method to obtain the propulsive efficiency factors of propellers. The paper explains the causes of this phenome...
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Adrian Lungu
The scale effect on the accuracy of a numerical simulation in ship hydrodynamics represents an important issue of the propeller numerical analysis. To grasp a better understanding on the influence of this effect, an introspection on the performances of a...
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Stephan Helma, Heinrich Streckwall and Jan Richter
In common model testing practise, the measured values of the self propulsion test are split into the characteristics of the hull, the propeller and into the interaction factors. These coefficients are scaled separately to the respective full scale values...
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