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ISSN 2083-6473
ISSN 2083-6481 (electronic version)
 

 

 

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Tomasz Neumann
 

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TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
www http://www.transnav.eu
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Coefficients of Propeller-hull Interaction in Propulsion System of Inland Waterway Vessels with Stern Tunnels
1 Wrocław University of Science and Technology, Wrocław, Poland
ABSTRACT: Propeller-hull interaction coefficients - the wake fraction and the thrust deduction factor - play significant role in design of propulsion system of a ship. In the case of inland waterway vessels the reliable method of predicting these coefficients in early design stage is missing. Based on the outcomes from model tests and from numerical computations the present authors show that it is difficult to determine uniquely the trends in change of wake fraction and thrust deduction factor resulting from the changes of hull form or operating conditions. Nowadays the resistance and propulsion model tests of inland waterway vessels are carried out rarely because of relatively high costs. On the other hand, the degree of development of computational methods enables? to estimate the reliable values o interaction coefficients. The computations referred to in the present paper were carried out using the authors? own software HPSDKS and the commercial software Ansys Fluent.
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Citation note:
Kulczyk J., Tabaczek T.: Coefficients of Propeller-hull Interaction in Propulsion System of Inland Waterway Vessels with Stern Tunnels. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 8, No. 3, doi:10.12716/1001.08.03.08, pp. 377-384, 2014

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