On the power prediction methods in the preliminary ship design stage
Abstract
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 method is briefly presented. The new idea of equivalent open propeller is the basic difference between the ITTC QBS - procedures and the QBS-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 QBS, ns and VTS parameters are of unique value independent of the subjective choice of averaging criteria.
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-Details
- Issue
- Vol. 8 No. 3(29) (2001)
- Section
- Latest Articles
- Published
- 13-10-2021
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