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- Title
Study on Drag Reduction Performance of Antifouling Ribbed Surfaces.
- Authors
Fu Yifeng; Yuan Chengqing; Bai Xiuqin; Li Tao
- Abstract
Drag reduction by ribbed surfaces is a potentially effective strategy for reducing the energy consumption of ships. However, complicated by possible marine biofouling, it is meaningless to consider the isolated effect of drag reduction of riblets. There is a strong correlation between drag reduction and antifouling, and thus it is crucial to study their synergistic behaviors. In this study, shell is taken as a biomimetic object, which has ribbed surfaces and antifouling properties. On the premise of antifouling, the microstructures of the shell surface are simplified as ribbed surfaces with an interval w between neighboring riblets. The impact of the riblet interval w on drag reduction performance is studied both numerically and experimentally. The numerical simulation adopts the Shear Stress Transport k - ω turbulence model, and the characteristics of smooth and ribbed surfaces are analyzed in the same computational domain. Numerical results show that the riblet interval w has a complex nonmonotonic effect on drag reduction. The corresponding experimental measurement shows similar trend to the numerical results.
- Subjects
DRAG reduction; ENERGY consumption; SHIPS; DRAG (Aerodynamics); FLUID control
- Publication
Journal of Ship Production & Design, 2018, Vol 34, Issue 1, p32
- ISSN
2158-2866
- Publication type
Article
- DOI
10.5957/JSPD.160018