How to divide the global resistance change into the components related to the pushing propeller and the pulling propeller of the double-ended ship

• Autorzy: Jarzyna H.
• Języki publikacji: EN

Abstrakty

EN

The division of the global resistance change [wzór] due to the simultaneous action of the pushing (SR) and pulling(SD) screw propellers into the components [wzór] and [wzór] can be done by taking into account two different procedures and different hypothetical assumptions given in the form of the division coefficients (Aj)R and (Aj)D, the same in each procedure. In the procedure no1:[wzór] In the procedure no 2: [wzór] Two necessary conditions were formulated to be fulfilled when selection of the coefficients (Aj)R and (Aj)D is done. The results of the analysis are univocal. Among the possible division coefficients only one pair of them fulfills the formulated conditions. This pair is: [wzór]

Słowa kluczowe

EN

self propulsion tests; double-ended ships; resistance change due to propeller action

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2008
• Tom: nr 2
• Strony: 12--14
• Opis fizyczny: Bibliogr. 6 poz., tab.

Twórcy

autor

Jarzyna H.

Bibliografia

• 1. Jarzyna H.: Interaction of Ship Hull and Propeller (in Polish), Monograph, Fluid Flow Machinery, Ossolineum Publishing House, Vol.14., Wrocław 1993
• 2. Jarzyna H.: Some Problems of the Model Self Propulsion Tests (in Polish), Monograph, Fluid Flow Machinery, Ossolineum Publishing House, Vol.26, Wrocław 2002
• 4. Jarzyna H., Tuszkowska T.: Ship Power Prediction Methods Based on a General Definition of the Equivalent Open-Water Screw Propeller, Monograph, IFFM Publishers, Gdańsk 2002
• 5. Jarzyna H.: Selection of the Most Suitable Method to Split the Resistance Increment into Components Related to Individual Propellers of Double-Ended Ferry. Archives of Civil and Mechanical Engineering, Vol VII, No 3, Wrocław 2007
• 6. Proceedings of ITTC: Reports of the Performance Committee to 15-th ITTC-1978; 16-th ITTc-1981; 17-th ITTC-1984; 18-th ITTC-1987; 19-th ITTc-1990; 20-th ITTC-1993