Measurement of Flow Fields and Hydrodynamic Forces Acting on Ships in Manoeuvring Motion

Accession number;06A1016278
Title;Measurement of Flow Fields and Hydrodynamic Forces Acting on Ships in Manoeuvring Motion
Author; UENO MICHIO (National Maritime Res. Inst., Jpn) TSUKADA YOSHIAKI (National Maritime Res. Inst., Jpn) MIYAZAKI HIDEKI (National Maritime Res. Inst., Jpn) NIMURA TADASHI (National Maritime Res. Inst., Jpn)
Journal Title;Kaiyo Kogaku Shinpojiumu (CD-ROM)
Journal Code:S0108B
ISSN:
VOL.19th;NO.;PAGE.ROMBUNNO.53(2006)
Figure&Table&Reference;FIG.12, TBL.3, REF.10
Pub. Country;Japan
Language;English
Abstract;Preventing marine accidents such as collisions and running aground of ships is important not only for saving human lives but also for protecting the global environment. A Correct prediction of the ships' manoeuvrability at its design stage is considered to be helpful for this objective. In order to predict ships' manoeuvrability, hydrodynamic forces acting on ships in manoeuvring motions must be estimated experimentally or theoretically. A theoretical calculation using CFD, computational fluid dynamics, for estimating the hydrodynamic forces needs experimental data for its validation. Especially, experimental data of flow fields around ships in manoeuvring motions are crucial for developing reliable and advanced CFD codes in the near future. In this paper, experiments measuring stern flow fields of two model ships, one is of a tanker and the other is of a container ship, in turning motions with oblique angles are reported. The measured stern flow fields clearly show wake distributions and vortices shed from these model ship hulls in the manoeuvring motion. Hydrodynamic forces and moment acting on these model ships in turning motions with oblique angles for the bare hull conditions are also reported in this paper. The difference of characteristics of the flow fields and the hydrodynamic forces between these two types of ships is discussed. (author abst.)
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