2012 Fiscal Year Final Research Report
Development of an Optimum Attachment for Suppressing Vortex Induced Vibration of a Long Flexible Pipe
| Project/Area Number |
23760782
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Osaka University |
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Principal Investigator |
SENGA Hidetaka 大阪大学, 大学院・工学研究科, 助教 (60432522)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 渦励振 / 付加物 / PIV |
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| Research Abstract |
In Ocean development, many cylindrical shape structures are in use. These structures are subjected to many external forces. Especially, the lift force induced by the shedding vortices cause the vibration of the structures. One of thesolutions to suppress vibrations is to attach appendages on structures. However, it may happen that such appendages increase vibrations in some situations. In this research, some experiments were carried out to reveal the influence of the motion and flow field around the structure with the appendages. Then, numerical simulation method was developed to easily modify an appendage’s shape and simulate its performance in different circumstances.
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