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- Title
Deformed shape estimation for flexible composite marine propellers by image registration.
- Authors
Shiraishi, Koichiro; Sawada, Yuki; Arakawa, Daijiro
- Abstract
The authors have recently developed a 3D shape measurement method using a combination line charge-coupled device (CCD) camera that can accurately measure 3D shapes underwater. This method can precisely measure the deformation of flexible composite marine propellers. The authors measured the deformation of a flexible model propeller fabricated with a 3D printer. To utilize the results of the deformation measurement as verification data for fluid–structure interaction calculation, not only the amount of deformation but also the deformed 3D blade shape is necessary. The authors have developed an estimation method for the deformed blade shape of flexible composite marine propellers. The authors focus on a feature that the deformed blade shape can be represented by the position change of the wing section and developed an estimation method for the deformed blade shape by image registration. To verify the system's effectiveness, model experiments were conducted in the NMRI's large cavitation tunnel using the highly skewed propeller (HSP) of a training ship "SEIUN-MARU I". Comparing the results of experiments and numerical simulation, the authors show the effectiveness of the developed estimation method.
- Subjects
PROPELLERS; IMAGE registration; FLUID-structure interaction; SHAPE measurement; 3-D printers; CCD cameras
- Publication
Journal of Marine Science & Technology, 2023, Vol 28, Issue 1, p221
- ISSN
0948-4280
- Publication type
Article
- DOI
10.1007/s00773-022-00918-1