On the power prediction methods in the preliminary ship design stage

• Autorzy: Jarzyna H. , Tuszkowska T.
• Języki publikacji: EN

Abstrakty

EN

The ITTC-78 power prediction method can by divided into three groups of procedures: RTS- procedures, TBS- procedures and the QBS- procedures. Only the QBS- procedures are analyzed in this paper. A new approach to the determination of QBS and nS parameters is proposed. Outline of the new methods is briefly presented. The new idea of equivalent open propeller is the basic difference between the ITTCQ BS- procedures and the Q BS-JH - procedures. The aim of this approach is to reduce the number of parameters needed to be corrected due to the scale effect and to generate a situation where the Q BS, n S and V TS parameters are of unique value independent of the subjective choice of averaging criteria.

Słowa kluczowe

EN

ship; ship design stage

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2001
• Tom: nr 3
• Strony: 3--7
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Jarzyna H.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences, Gdańsk

autor

Tuszkowska T.

• Institute of Fluid-Flow Machinery Polish Academy of Sciences, Gdańsk

Bibliografia

• 1. Jarzyna H. : The effective mean velocity in model propulsion tests. The essence of the idea. The possible definitions. Marine Technology Transactions, 1995, Vol.6.
• 2. Jarzyna H. : The reasons to introduce a new definition of the effective mean velocity in model propulsion tests. Part I. Polish Maritime Research, No. 1, March 1995 Part II: Polish Maritime Research, No. 2, June 1995.
• 3. Jarzyna H. : On the mean effective velocity definition in model propulsion tests. Marine Technology Transactions, 1994, Vol.5.
• 4. Jarzyna H. : A new method of effective mean velocity determination in propulsion tests. Proceedings of Marind'96. Vama, June 1996.
• 5. Jarzyna H. : Some problems of ship propulsion model tests (A monography in Polish). Ossolineum. Wroclaw, 2001.
• 6. Proceedings of ITTC, Reports of the Performance Committee: No 15-1978; No 16-1981; No 18-1987; No 19-1990, No 20-1993.