As outlined in the grant proposal for the current project, Reference /1/, the overall technical objective for the current project was to investigate the maneuvering characteristics of a displacement vessel using the RANS code CFDSHIP-IOWA, with emphasis on the hull-rudder-propeller interaction. The numerical model was to be used to evaluate maneuvering characteristics by numerically performing the tests otherwise included in a physical Planar Motion Mechanism (PMM) test. At Force Technology - Division for Maritime Industry (formerly Danish Maritime Institute) experimental procedures and methods for analyzing model scale test results and extrapolation to full scale have been established over a 35-year period. Good general and detailed knowledge of maneuvering characteristics have consequently been gained during this period. It is recognized, however, that experimental work is both time-consuming and expensive when small alterations to an existing design are made during optimization of the maneuverability of a ship. In addition, PMM testing does not provide detailed knowledge of the flow regimes inducing the measured integral level forces. Since numerical procedures address both of these concerns Computational Fluid Dynamics (CFD) has been considered as an alternative to experimental work. CFD, has not, however, readily provided a tool for assessing maneuvering characteristics. To improve on this situation DMI initiated an R&D effort to develop methods in CFD to assess some of the basic hydrodynamic derivatives for a maneuvering ship.
Development and Validation of Computational Ship Hydrodynamics
2003
68 pages
Report
No indication
English
Marine Engineering , Fluid Mechanics , Maneuverability , Validation , Computational fluid dynamics , Hydrodynamics , Tanker ships , Mathematical models , Optimization , Scale models , Displacement , Flow fields , Model tests , Numerical methods and procedures , Marine propellers , Marine rudders , Ship hulls , Extrapolation , Denmark , Foreign reports , Rans computation , Viscous inviscid interaction , Cfdship iowa computer program , Hull-rudder- propeller interaction , Pmm(Planar motion mechanism)
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