SBDの概念による実海域性能を考慮した高速船の船型設計法の研究(<特集>CFD)

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So far ship performance has been evaluated through the propulsion performance at a calm sea, however, nowadays this does not always give a sufficient index for the evaluation of ship performance. Recently, instead of the performance at a calm sea, the performance at actual seas has become an important alternative index. Consequently this performance should be considered at an initial design stage for a newly developed ship. In this study, a design method based on the concept of simulation based design (abbreviately SBD) is presented. In the present paper SBD concept is defined as a seamless process such that a hull form of mother ship is optimized to minimize the ship resistance at actual sea, the summation of the resistance at a calm sea and an added resistance in irregular waves. In the paper, first of all, the present SBD concept is introduced. In order to show the effectiveness of the present system, a high-speed ferry boat is adopted as an example and it is optimized by use of the system. Furthermore, the system is verified to compare the performances of mother and optimized ships obtained through tank experiments. Since the SBD system consists of many modules such as hull form deformation, the estimation of ship resistance at a calm sea, the estimation of the added resistance in irregular waves, the evaluation of sea condition for a given sea route and so forth, each module can be revised independently. From this point of view, the following three advanced studies have also engaged. They are (1) Database system for winds and waves around Japan, (2) CFD tool to simulate flow around ship with shaft brackets, and (3) Strip method to consider the hull form over the still water line.
独立行政法人海上技術安全研究所の論文
2007-09-28

SBDの概念による実海域性能を考慮した高速船の船型設計法の研究(<特集>CFD)

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